Properties of the Number 25491

Twenty-Five Thousand Four Hundred Ninety-One

Basics

Value: 25490 → 25491 → 25492

Parity: odd

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 29 × 293

Divisors: 1, 3, 29, 87, 293, 879, 8497, 25491

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110010011

Octal: 61623

Duodecimal: 12903

Hexadecimal: 6393

Square: 649791081

Square Root: 159.6590116466966

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 (w,x,y,z) with all terms in {0,...,n} and w=[R/2], where R=max{w,x,y,z}-min{w,x,y,z} and [ ]=floor. A212758

a(n) = (3·a(n-1)) XOR a(n-2). A210680

Number of nX5 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one. A266078

Number of 5Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. A301967

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. A301964

In base 11, a(n) = sum of digits of Lucas(a(n)). A25491

Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281798