Properties of the Number 25620

Twenty-Five Thousand Six Hundred Twenty

Basics

Value: 25619 → 25620 → 25621

Parity: even

Prime: No

Previous Prime: 25609

Next Prime: 25621

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 7 × 61

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010000010100

Octal: 62024

Duodecimal: 129B0

Hexadecimal: 6414

Square: 656384400

Square Root: 160.0624877977348

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 isosceles triangles that can be formed from the n² points of n X n grid of points (or geoboard). A186434

One-sixth the area of the smallest primitive d-arithmetic triangle, where d=A072330(n). A72360

θ series of A₆ lattice. A8446

Numbers n for which 2 < A257993(A276086(A276086(n))) < A257993(n), where A276086 converts the primorial base expansion of n into its prime product form, and A257993 returns the index of the least prime not present in its argument. A328762

Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,57. A65697

Numbers k such that ψ(k²) = k, ψ = A002322; indices of 1 in A341857. A341858

Structured truncated dodecahedral numbers. A100153

Numbers n such that p(12n) is prime, where p(n) is the number of partitions of n. A115214

Total sum of the 5th powers of lengths of ascending runs in all permutations of [n]. A228995

Triangle read by rows: T(n,k) is the number of alternating max-precedes-min permutations on [n+2] with 1 in position k+2, 0<=k<=n. A104346