Properties of the Number 25319

Twenty-Five Thousand Three Hundred Nineteen

Basics

Value: 25318 → 25319 → 25320

Parity: odd

Prime: No

Previous Prime: 25309

Next Prime: 25321

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 3617

Divisors: 1, 7, 3617, 25319

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001011100111

Octal: 61347

Duodecimal: 1279B

Hexadecimal: 62e7

Square: 641051761

Square Root: 159.1194519849789

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: T(m,n) = (F(m) + F(2·m) + ... + F(n·m))/F(m), by antidiagonals, where F = A000045 (Fibonacci numbers). A214984

a(n) = n³ + (n+1)*(n+2). A270109

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 7/5. A279779

Number of strict compositions of n with alternating parts strictly decreasing. A342343

Fibonacci sequence beginning 3, 14. A22125

Array: T(m,n) = (F(n) + F(2·n) + ... + F(n·m))/F(n), by antidiagonals; transpose of A214984. A214985

Variation on Ulam numbers: a(1) = 1; a(2) = 2; for n>2, a(n) is smallest (n odd) or largest (n even) new number that is the sum of two distinct earlier terms. A81025

Triangle read by rows, numerators of T(n,k) = (-1)ⁿ*binomial(n-1,k)*Bernoulli(n+k)/ (n+k) for n>=1, 0<=k<=n-1. A287703

Expansion of ∏_k>0 (1 - 2·k*x^2·k)/(1 + (2·k-1)*x^2·k-1). A319860

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1), (1, 1, 1)}. A151211