Properties of the Number 81825

Eighty-One Thousand Eight Hundred Twenty-Five

Basics

Value: 81824 → 81825 → 81826

Parity: odd

Prime: No

Previous Prime: 81817

Next Prime: 81839

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 1091

Divisors: 1, 3, 5, 15, 25, 75, 1091, 3273, 5455, 16365

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111110100001

Octal: 237641

Duodecimal: 3B429

Hexadecimal: 13fa1

Square: 6695330625

Square Root: 286.0506948077561

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)/A002939(n+1) is the Kirchhoff index of the join of the disjoint union of two complete graphs on n vertices with the empty graph on n+1 vertices. A338109

Size of minimal binary covering code of length n and covering radius 1. A983

Decimal expansion of atomic mass constant, in kg. A81825