Properties of the Number 25490

Twenty-Five Thousand Four Hundred Ninety

Basics

Value: 25489 → 25490 → 25491

Parity: even

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 2549

Divisors: 1, 2, 5, 10, 2549, 5098, 12745, 25490

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110010010

Octal: 61622

Duodecimal: 12902

Hexadecimal: 6392

Square: 649740100

Square Root: 159.65587994182988

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 k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically. A207938

Number of partitions of n into colored blocks of equal parts, such that all colors from a set of size four are used and the colors are introduced in increasing order. A327287

Numbers that contain as proper substrings every maximal prime power dividing them. A59401

Number of n X 6 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically. A207936

Number of 5Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically. A207941

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood. A268275

Duplicate of A090839. A296055

Number of subsets of {1,2,...,n} such that no two elements differ by 1, 3, 4, or 5. A375985

Numbers k such that the sum of the digits of Fibonacci(k) in base 11 is k. A25490