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Properties of the Number 25559

Twenty-Five Thousand Five Hundred Fifty-Nine

Basics

Value: 25558 → 25559 → 25560

Parity: odd

Prime: No

Previous Prime: 25541

Next Prime: 25561

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 61 × 419

Divisors: 1, 61, 419, 25559

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001111010111

Octal: 61727

Duodecimal: 1295B

Hexadecimal: 63d7

Square: 653262481

Square Root: 159.8718236588299

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

a(n) = (4·n3-3·n2+5·n-3)/3. A177342
Number of dissections of a convex polygon by nonintersecting diagonals into polygons with even number of sides and having a total number of n edges (sides and diagonals). A67955
Table read by antidiagonals upward: T(n,k) is the number of ways to move a chess queen from (1,1) to (n,k) in the first quadrant using only right, diagonal up-right, and diagonal up-left moves. A334016
Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 45 ones. A31813
Number of interior balls in a truncated octahedral arrangement. A93033
Index of record values of A339082. A339173
Indices of primes in the sequence defined by A(0) = 29, A(n) = 10·A(n-1) - 31 for n > 0. A101963
Numbers n such that 2·10n + 5·Rn + 4 is prime, where Rn = 11...1 is the repunit (A002275) of length n. A102956
Rolling icosahedron footprints: number of 4Xn 0..11 arrays starting with 0 where 0..11 label vertices of an icosahedron and every array movement to a horizontal or antidiagonal neighbor moves along an icosahedral edge. A223324
a(n) is the number of odd terms in the n-th column of A334016. A338276