Properties of the Number 25160

Twenty-Five Thousand One Hundred Sixty

Basics

Value: 25159 → 25160 → 25161

Parity: even

Prime: No

Previous Prime: 25153

Next Prime: 25163

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 × 17 × 37

Divisors: 1, 2, 4, 5, 8, 10, 17, 20, 34, 37

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001001001000

Octal: 61110

Duodecimal: 12688

Hexadecimal: 6248

Square: 633025600

Square Root: 158.61904047118682

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

Irregular triangle read by rows: T(n,k) = number of unsigned unichromosonal genomes with n genes at 4-break distance k from a fixed genome, 0 <= k <= floor((n+1)/3). A264616

a(n) = 2^φ(n) - ∑_j=0..n binomial(φ(n), φ(j)). A73318

G.f. satisfies: A(x) = 1 + x·A(x+x²)². A127783

a(n) = 441·n² - 394·n + 88. A157734

Number of permutations p of {1,...,n} satisfying p(1)=1 and, if n>1, |p(i)-p((i mod n)+1)| is in {2,3} for i from 1 to n. A174469

Numbers k such that k*∑_d∣k 1/σ(d) is an integer. A69166

A version of F. K. Hwang's sequence in {3·k, 3·k+1, 3·k+2}. A123945

a(3n) = floor(43·2ⁿ/28) - 1, a(3n+1) = a(3n) + 3·2^n-3, a(3n+2) = floor(17·2ⁿ/7 - 6/7) for n>=3. A123946

Sum_xⁱ*y^j*z^k with i + j + k = m and (x, y, z) = the primitive Pythagorean triple (8, 15, 17). A124100

a(1) = 15; for n > 1, a(n)² is the smallest square that begins with a(n-1) in base 6. A336251