Properties of the Number 25444

Twenty-Five Thousand Four Hundred Forty-Four

Basics

Value: 25443 → 25444 → 25445

Parity: even

Prime: No

Previous Prime: 25439

Next Prime: 25447

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 6361

Divisors: 1, 2, 4, 6361, 12722, 25444

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001101100100

Octal: 61544

Duodecimal: 12884

Hexadecimal: 6364

Square: 647397136

Square Root: 159.51175505272332

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 (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111. A260070

Numbers n such that the decimal number concat(9,n) is a square. A273364

E.g.f. exp(tan(x) + sec(x) - 1). A772

a(n) = 1/n times the number of n-colorings of the complete bipartite graph K_n,n. A282245

Logarithmic derivative of the q-exponential of x, E_q(x,q), evaluated at q=-x. A198262

Number of length 3+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero. A250322

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111. A260067

Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 4,0 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid. A155280

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111. A260062

Number of partitions of n into 5 distinct nonzero squares. A25444