Properties of the Number 25257

Twenty-Five Thousand Two Hundred Fifty-Seven

Basics

Value: 25256 → 25257 → 25258

Parity: odd

Prime: No

Previous Prime: 25253

Next Prime: 25261

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 8419

Divisors: 1, 3, 8419, 25257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110001010101001

Octal: 61251

Duodecimal: 12749

Hexadecimal: 62a9

Square: 637916049

Square Root: 158.92451038150156

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

Number of partitions of n such that 2*(greatest part) < (number of parts). A237751

Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from a 2·n square grid of points using only a compass. A359862

a(n) = 49n² - 28n - 20. A118058

a(n) = (a(n-4) + a(n-1) * a(n-7)) / a(n-8), a(0) = a(1) = ... = a(7) = 1. A275174

Number of n X 3 0..1 arrays with each 1 adjacent to 0 or 3 king-move neighboring 1's. A295913

a(n) = s(n,n) + s(n,n-1) + s(n,n-2), where s(n,k) are the unsigned Stirling numbers of the first kind (see A132393). A308305

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 82 ones. A31850

Maximum number of points visible from some point in a cubic n·n x n lattice. A141227

Number of n X 7 binary arrays without the pattern 0 1 diagonally, vertically or antidiagonally. A188864

Number of 0..2 arrays of length n with each element differing from at least one neighbor by 1 or less. A221591