14625
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 28392
- Proper Divisor Sum (Aliquot Sum)
- 13767
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7200
- Möbius Function
- 0
- Radical
- 195
- Omega Function (Ω)
- 6
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 45
- 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
- a(n) = n*(n+5)*(n+6)*(n+7)/24.at n=20A005587
- a(n) = 11^n-n^2.at n=4A024129
- Odd 9-gonal (or enneagonal) numbers.at n=32A028991
- Numbers k such that k^2 and k^3 have the same set of digits.at n=23A029797
- a(n) = (2*n+1)*(7*n+1).at n=32A033572
- Numbers ending with '5' that are the difference of two positive cubes.at n=37A038860
- Numbers k such that 2^(k+1) - k - 2 is prime.at n=13A063791
- Numbers n that are the hypotenuse of exactly 10 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 10 ways.at n=31A097225
- Maximal number of regions obtained by a straight line drawing of the complete bipartite graph K_{n,n}.at n=15A117717
- Enneagonal numbers divisible by 9.at n=15A117796
- a(n) = Sum_{k=1..phi(n)-1} t(n,k)*t(n,k+1), where t(n,k) is the k-th positive integer which is coprime to n and phi(n) is the number of positive integers which are <= n and are coprime to n.at n=45A119584
- Primitive elements of A065607.at n=14A120692
- Elements of A065607 from primitive triples.at n=20A120693
- Row sums of triangle A134480.at n=25A134481
- Triangle of succession numbers for circular permutations.at n=46A134832
- Second column (k=1) of triangle A134832 (circular succession numbers).at n=8A135799
- a(n) = 11^n - 2^n.at n=4A139740
- a(n) = 65*n^2.at n=14A165798
- Monotonic ordering of nonnegative differences 5^i-10^j, for 40>= i>=0, j>=0.at n=15A192201
- Number of partitions of n in which two summands (of each size) are designated.at n=24A255180