Properties of the Number 25942

Twenty-Five Thousand Nine Hundred Forty-Two

Basics

Value: 25941 → 25942 → 25943

Parity: even

Prime: No

Previous Prime: 25939

Next Prime: 25943

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 7 × 17 × 109

Divisors: 1, 2, 7, 14, 17, 34, 109, 119, 218, 238

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110010101010110

Octal: 62526

Duodecimal: 1301A

Hexadecimal: 6556

Square: 672987364

Square Root: 161.06520418762085

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 undirected circular permutations i₀, i₁, ..., i_n of 0, 1, ..., n such that all the 2·n+2 numbers |i₀ +/- i₁|, |i₁ +/- i₂|, ..., |i_n-1 +/- i_n|, |i_n +/- i₀| have the form (p-1)/2 with p an odd prime. A228956

a(n) = ∑_{k=0..floor(n/2)} binomial(2*(n-2·k),k) * binomial(2*(n-2·k),n-2·k). A361752

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2. A255223

Binomial transform of A061800. A86954

Dispersion of A016825 (4k+2, k>0), by antidiagonals. A191668

Expansion of 1/((1-2x)(1-3x)(1-6x)(1-12x)). A25942

Array A read by upward antidiagonals in which the entry A(n,k) in row n and column k is defined by A(n,k) = (8 + (3·floor((4·n + 1)/3) - 2)*4^k)/12, n,k >= 1. A260596