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Properties of the Number 25137

Twenty-Five Thousand One Hundred Thirty-Seven

Basics

Value: 25136 → 25137 → 25138

Parity: odd

Prime: No

Previous Prime: 25127

Next Prime: 25147

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 3 × 7 2 × 19

Divisors: 1, 3, 7, 9, 19, 21, 27, 49, 57, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001000110001

Octal: 61061

Duodecimal: 12669

Hexadecimal: 6231

Square: 631868769

Square Root: 158.54652314068574

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

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8. A252615
Pseudo-random numbers: a (very weak) pseudo-random number generator from the second edition of the C book. A61364
Pairs of deficient numbers having the same value of σ(k)/k in the order that they are found. A211680
Pairs of primitive deficient numbers having the same value of σ(k)/k, listed by increasing value of the larger of the two k values. A212610
a(n) = ∑i=0..n digsum9(i)3, where digsum9(i) = A053830(i). A231686
Numbers k such that squarefree part of σ(k) is equal to squarefree part of 2·k. A331752
Deficient numbers n having a companion m > n such that σ(n)/n = σ(m)/m. A212608
Primitive deficient numbers n having a companion m > n such that σ(n)/n = σ(m)/m (ordered by increasing (smallest possible) m). A212611
4*(n + 7)3 - 27*(n + 7)2 = (4·n +1)*(n+7)2. A245033
a(n) is the smallest number which can be represented as the sum of n distinct positive cubes in exactly 2 ways, or -1 if no such number exists. A374417