Properties of the Number 25180

Twenty-Five Thousand One Hundred Eighty

Basics

Value: 25179 → 25180 → 25181

Parity: even

Prime: No

Previous Prime: 25171

Next Prime: 25183

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 1259

Divisors: 1, 2, 4, 5, 10, 20, 1259, 2518, 5036, 6295

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001001011100

Octal: 61134

Duodecimal: 126A4

Hexadecimal: 625c

Square: 634032400

Square Root: 158.6820720812531

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 integer partitions of n with more than one part of least multiplicity. A362609

Number of integer partitions of the n-th squarefree semiprime into squarefree semiprimes. A338903

Number of nonisomorphic configurations of degree >= 2 (or generators) of n triples in Steiner triple systems. A82790

Principal diagonal of the convolution array A213548. A213549

Irregular table read by rows: T(n,k) is the start of the first run of exactly k consecutive even integers having exactly n divisors, or 0 if no such run exists. A325117

Numbers k such that s(k) = s(k+1), where s(k) is the unitary analog of the alternating sum-of-divisors function (A307037). A333408

Prime numbers p such that p - 1 is the fourth a-figurate number, eighth b-figurate number and possibly sixteenth c-figurate number for some a, b and c and not a d-figurate number for any nontrivial d. A144315

a(n) = number of (s(0), s(1), ..., s(n)) such that s(i) is an integer, s(0) = 0, |s(1)| = 1, |s(i) - s(i-1)| <= 1 for i >= 2, s(n) = 2. Also a(n) = T(n,n-2), where T is the array defined in A025177. A25180