Properties of the Number 25480

Twenty-Five Thousand Four Hundred Eighty

Basics

Value: 25479 → 25480 → 25481

Parity: even

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 7 ² × 13

Divisors: 1, 2, 4, 5, 7, 8, 10, 13, 14, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110001000

Octal: 61610

Duodecimal: 128B4

Hexadecimal: 6388

Square: 649230400

Square Root: 159.62455951387932

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

Array read by descending antidiagonals: A(n,k) is the number of achiral colorings of the facets of a regular n-dimensional orthotope using up to k colors. A325007

Number of achiral colorings of the 8 cubic facets of a tesseract or of the 8 vertices of a hyperoctahedron. A337958

Number of ways to place 2 nonattacking amazons (superqueens) on an n X n board. A172200

Triangle read by rows: T(n, k) = binomial(2·n, n + k) * binomial(n + 1, k)/(n + 1). A286784

Number of partitions of an n-gon into (n-5) parts. A2060

Number of tree-rooted planar maps with 3 faces and n vertices and no isthmuses. A6470

Low temperature series for spin-1/2 Ising specific heat on 2D square lattice. A29872

Variance of time for a random walk starting at 0 to reach one of the boundaries at +n or -n for the first time. A72819

a(n) = ∑_i=0..n digsum₈(i)³, where digsum₈(i) = A053829(i). A231682

a(n) = ∑_i=0..n digsum₉(i)³, where digsum₉(i) = A053830(i). A231686