Properties of the Number 25580

Twenty-Five Thousand Five Hundred Eighty

Basics

Value: 25579 → 25580 → 25581

Parity: even

Prime: No

Previous Prime: 25579

Next Prime: 25583

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 1279

Divisors: 1, 2, 4, 5, 10, 20, 1279, 2558, 5116, 6395

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001111101100

Octal: 61754

Duodecimal: 12978

Hexadecimal: 63ec

Square: 654336400

Square Root: 159.93748778819804

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

Numbers that are sums of 2 or more consecutive squares in more than 1 way. A62681

Numbers k such that (2^k - k + 1)*2^k - 1 is prime. A201361

Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 4. A209988

Row sums of number triangle A110541. A110542

a(n) = 64·n² - n. A157948

a(n) = 256·n² - 2·n. A158249

a(n) = 400·n² - 20. A158597

Numbers that can be written as the sum of four or more consecutive squares in more than one way. A307937

"DIK" (bracelet, indistinct, unlabeled) transform of 4,4,4,4... A32285

Number of walks within N² (the first quadrant of Z²) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (0, 1), (1, -1), (1, 0)}. A151288