Properties of the Number 25657

Twenty-Five Thousand Six Hundred Fifty-Seven

Basics

Value: 25656 → 25657 → 25658

Parity: odd

Prime: Yes

Previous Prime: 25643

Next Prime: 25667

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 25657

Divisors: 1, 25657

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010000111001

Octal: 62071

Duodecimal: 12A21

Hexadecimal: 6439

Square: 658281649

Square Root: 160.17802595861892

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers k such that k, k+1, k+2 and k+3 are 1,2,3,4-almost primes. A113000

Primes that are the average of the members of emirp pairs. A178581

Primes that are palindromic in base 12. A29979

Primes that remain prime through 3 iterations of function f(x) = 5x + 2. A23283

Primes that remain prime through 4 iterations of function f(x) = 5x + 2. A23313

a(n) = a(n-1) + a(round(2*(n-1)/3)) + a(round((n-1)/3)) with a(1)=a(2)=1. A33499

Numbers k such that 31·2^k-1 is prime. A50541

Row sums of triangle A104988, which equals the matrix square of triangle A104980. A104989

Numbers such that the sum of the factorials of the digits of the fourth power is a square. A126077

Second prime p such that (p+n)²+n is prime but (p+j)²+j is not prime for all 0<j<n. A238674