Properties of the Number 25909

Twenty-Five Thousand Nine Hundred Nine

Basics

Value: 25908 → 25909 → 25910

Parity: odd

Prime: No

Previous Prime: 25903

Next Prime: 25913

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 13 × 1993

Divisors: 1, 13, 1993, 25909

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010100110101

Octal: 62465

Duodecimal: 12BB1

Hexadecimal: 6535

Square: 671276281

Square Root: 160.96272860510285

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 nX2 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. A298215

G.f. satisfies A(x) = ( 1 + x / (1 - x·A(x)²) )². A371612

Strong pseudoprimes to base 41. A20267

Numbers k such that the continued fraction for sqrt(k) has period 63. A20402

a(n) = ∑_k=0..n (k+1) * A026670(n, k). A26985

Expansion of 1/((1-x⁷)*(1-x⁸)*(1-x¹⁰)). A25909

Number of nX4 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A298457