11625
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 19968
- Proper Divisor Sum (Aliquot Sum)
- 8343
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6000
- Möbius Function
- 0
- Radical
- 465
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 174
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Number of 3's in n-th term of A007651.at n=39A022468
- Positive numbers having the same set of digits in base 8 and base 10.at n=37A037442
- Numbers whose base-5 representation contains exactly three 0's and three 3's.at n=9A045202
- Smallest composite x such that sigma(x+2^n) = sigma(x) + 2^n.at n=23A054987
- Write 1, 2, 3, 4, ... counterclockwise in a hexagonal spiral around 0 starting left down, then a(n) is the sequence found by reading from 0 in the vertical upward direction.at n=31A063436
- 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 7.at n=13A090776
- The first four numbers of this sequence are the primes 2,3,5,7. The other terms are calculated by adding the previous four terms.at n=14A100532
- Least sum (n+1) + (n+2) + ... + (n+k) that is a multiple of the n-th triangular number, n(n+1)/2.at n=29A110351
- Odd terms of A059756.at n=9A111042
- Numbers n such that (n+2) | (2^n+3^n).at n=7A123049
- Number of permutations of n distinct letters (ABCD...) each of which appears 5 times and having n-2 fixed points.at n=30A123296
- Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1000-1111-0010 pattern in any orientation.at n=11A147110
- (L)-sieve transform of A004767 = {3,7,11,15,...,4n-1,...}.at n=29A155167
- a(n) = ((2^b-1)/phi(n))*Sum_{d|n} Moebius(n/d)*d^(b-1) for b = 4.at n=24A160892
- The Wiener index of the comb-shaped graph |_|_|...|_| with 2n (n>=1) nodes. The Wiener index of a connected graph is the sum of the distances between all unordered pairs of vertices in the graph.at n=24A192023
- Expansion of 1/(1-x-x^2-x^3-x^4+x^5+x^6+x^7).at n=16A257934
- Number of rooted highly irregular trees with n nodes.at n=30A259863
- Number of (n+1)X(2+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.at n=11A261937
- Number of n X 2 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.at n=9A295045
- Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=10A303192