Properties of the Number 25358

Twenty-Five Thousand Three Hundred Fifty-Eight

Basics

Value: 25357 → 25358 → 25359

Parity: even

Prime: No

Previous Prime: 25357

Next Prime: 25367

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 31 × 409

Divisors: 1, 2, 31, 62, 409, 818, 12679, 25358

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110001100001110

Octal: 61416

Duodecimal: 12812

Hexadecimal: 630e

Square: 643028164

Square Root: 159.24195427085164

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

Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m·k + 1)*T(n-1, k, m) + m·f(n,k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1, f(n, k) = k if k <= floor(n/2) otherwise n-k, and m = 1, read by rows. A157207

Expansion of x/((1-x-x³)*(1-x)⁴). A144898

a(n) = ∑_i=0..n digsum₆(i)⁴, where digsum₆(i) = A053827(i). A231675

a(n) = ∑_k=1..n floor(n/(2·k-1))³. A350144

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={0}. A80012

Number of right triangles on an (n+1) X 5 grid. A189809

Expansion of (3+2·x²)/(1-x)⁴. A37236

Base-8 palindromes that start with 6. A43026

Knight's tour on spirally numbered infinite board, when the knight always jumps on the unvisited square closest to the origin, first according to the sup-norm, then 2-norm, then number of the square: a(n) = number of square visited at move n. A328909

Numbers that are the sum of 4 nonzero squares in exactly 2 ways. A25358