Properties of the Number 25798

Twenty-Five Thousand Seven Hundred Ninety-Eight

Basics

Value: 25797 → 25798 → 25799

Parity: even

Prime: No

Previous Prime: 25793

Next Prime: 25799

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 12899

Divisors: 1, 2, 12899, 25798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010011000110

Octal: 62306

Duodecimal: 12B1A

Hexadecimal: 64c6

Square: 665536804

Square Root: 160.61755819336813

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

T(n,k)=Number of nXk 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281765

Expansion of ∏_k>=1 1/(1 - x^k/(1 + x)). A307626

Consecutive terms of A065966 which are also consecutive integers. A65976

Semiprimes that are the sum of the first n odd primes for some n. A274182

Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281767

Numbers k such that the sum of all possible subsequences of the digits in k, excluding k itself, is k. A65794

Expansion of g.f. 1/((1 - x²)*(1 - x³)*(1 - x⁹)). A25798