Properties of the Number 25660

Twenty-Five Thousand Six Hundred Sixty

Basics

Value: 25659 → 25660 → 25661

Parity: even

Prime: No

Previous Prime: 25657

Next Prime: 25667

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 1283

Divisors: 1, 2, 4, 5, 10, 20, 1283, 2566, 5132, 6415

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010000111100

Octal: 62074

Duodecimal: 12A24

Hexadecimal: 643c

Square: 658435600

Square Root: 160.1873902652765

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

Sum over all partitions of n of the number of distinct parts i of multiplicity i. A276428

Expansion of determinant of 120 X 120 matrix M_u,v = q^{maj(u·v^-1}) where u, v in S₅ and maj = MacMahon's major index (cf. A008302). A323979

Number of partitions of [n] whose blocks can be ordered such that the i-th block has at least i elements and no block j > i has an element smaller than the i-th smallest element of block i. A362893

Wiener index of the n X n knight graph. A292054

Exponent of 6 (value of i) in n-th number of form 6ⁱ*7^j. A25660

Number of nX4 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. A298618