12589
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 12590
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 12588
- Möbius Function
- -1
- Radical
- 12589
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- no
- Narcissistic Number
- no
- Collatz Steps
- 125
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1504
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Number of partitions satisfying (cn(0,5) <= cn(2,5) = cn(3,5)).at n=47A036804
- Number of periodic palindromic structures using a maximum of six different symbols.at n=16A056507
- Number of triangulations of the cyclic polytope C(n, n-5).at n=7A066634
- Numbers k such that (5^k - 2^k)/3 is prime.at n=14A082182
- Least difference between 5^n and a power of 2.at n=7A086453
- Primes p such that the sum of the digits of p is not prime, but the sum of each digit raised to the 4th power is prime.at n=10A091368
- (2n+1)-digit anti-palindromic numbers or numberdromes, whose first and last digits add to ten, second and next-to-last add to ten and so on with the central digit a 5.at n=10A093472
- Indices of primes in sequence defined by A(0) = 31, A(n) = 10*A(n-1) + 51 for n > 0.at n=17A101839
- Partial sums of A011757.at n=17A109770
- Row sums of the power tree A114622.at n=9A114624
- Largest prime < 10*a(n-1), a(1)=13.at n=3A124298
- a(n) = 5^n mod 4^n.at n=7A138589
- Primes congruent to 9 mod 37.at n=42A142118
- Primes congruent to 2 mod 41.at n=37A142199
- Primes congruent to 33 mod 43.at n=39A142282
- Primes congruent to 40 mod 47.at n=31A142391
- Primes congruent to 45 mod 49.at n=36A142452
- Primes congruent to 28 mod 53.at n=25A142558
- Primes congruent to 49 mod 55.at n=35A142636
- Primes congruent to 49 mod 57.at n=38A142695