Properties of the Number 25005

Twenty-Five Thousand Five

Basics

Value: 25004 → 25005 → 25006

Parity: odd

Prime: No

Previous Prime: 24989

Next Prime: 25013

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 1667

Divisors: 1, 3, 5, 15, 1667, 5001, 8335, 25005

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110000110101101

Octal: 60655

Duodecimal: 12579

Hexadecimal: 61ad

Square: 625250025

Square Root: 158.12969360622944

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 n such that Maple 9.5, Maple 10, Maple 11 and Maple 12 give the wrong answers for the number of partitions of n. A110375

a(n) = C(n,5) + C(n,4) - C(n,3) + 1, n >= 7. A5288

Number of partitions of 2n in which odd parts and multiples of 3 and 5 occur with even multiplicities. There is no restriction on the other even parts. A102346

Total number of binary digits used to write all partitions of n in binary notation. A318756

Number of ways to arrange 3 indistinguishable points on an n X n X n triangular grid so that no three points are collinear at any angle. A194131

Sequence of distinct least positive numbers such that the average of the first n terms is a cube. A245624

Recurrence a(1) = 1, a(2) = 5; a(n) = (a(n-1) + a(n-2))/GCD(a(n-1),a(n-2)) + 1. A349576

Numbers k such that k and k² use only the digits 0, 2, 3, 5 and 6. A136888

Numbers k such that k and k² use only the digits 0, 2, 4, 5 and 6. A136898

Numbers k such that k and k² use only the digits 0, 2, 5 and 6. A136911