Properties of the Number 25564

Twenty-Five Thousand Five Hundred Sixty-Four

Basics

Value: 25563 → 25564 → 25565

Parity: even

Prime: No

Previous Prime: 25561

Next Prime: 25577

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 7 × 11 × 83

Divisors: 1, 2, 4, 7, 11, 14, 22, 28, 44, 77

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001111011100

Octal: 61734

Duodecimal: 12964

Hexadecimal: 63dc

Square: 653518096

Square Root: 159.88746042138513

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

Starts of runs of 3 consecutive Zeckendorf-Niven numbers (A328208). A328210

Array read by antidiagonals: T(n,k) = number of rooted 2-dimensional polyominoes with k cells, the cells being regular n-gons, with no symmetries removed. A94166

Number of maximal subsets of {1..n} containing no products of distinct elements. A325710

Maximum value taken on by f(P) = ∑_i=1..n p(i)*p(n+1-i) as {p(1),p(2),...,p(n)} ranges over all permutations P of {1,2,3,...,n}. A87035

Number of unlabeled maximal independent sets in the n-cycle graph. A127687

a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units with a trapezoid filled by 3 trapezoids. A391204

Number of rooted 2-dimensional polyominoes with n hexagonal cells, with no symmetries removed. A94165

Expansion of o.g.f. (1-x²+x⁴)/((1-x)²*(1-x²)⁴*(1-x³)⁴). A123991

Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<3z. A212512

Number of cyclic binary sequences of length n containing no abelian 4th powers. A305594