Properties of the Number 22025

Twenty-Two Thousand Twenty-Five

Basics

Value: 22024 → 22025 → 22026

Parity: odd

Prime: No

Previous Prime: 22013

Next Prime: 22027

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 881

Divisors: 1, 5, 25, 881, 4405, 22025

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011000001001

Octal: 53011

Duodecimal: 108B5

Hexadecimal: 5609

Square: 485100625

Square Root: 148.4082207965583

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

Expansion of 1/∑_k>=0 x^k². A317665

Number of pairs of integer partitions (y, v) of n such that there exists a pair of set partitions of {1,...,n} with meet {{1},...,{n}}, the first having block sizes y and the second v. A318396

Antidiagonal sums of square table A112564 of generalized Flavius Josephus sieves. A112569

Numbers k such that (2·k)!/(2*(k!)²) - 1 is prime. A112861

Values of n where A072629 switches from 01010.. into 0000.. or back. A72630

Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-8). A23438

a(n) = 2·a(n-1) - a(n-2) + 2·a(n-3) - 4·a(n-4) + 4·a(n-5) - 4·a(n-6) + 4·a(n-7) - 4·a(n-8) + 4·a(n-9) - 3·a(n-10) + 2·a(n-11) - 3·a(n-12) + 2·a(n-13) for n >= 16, with initial values as shown. A288511

Primitive sliding numbers (excludes multiples of 10): totals, including repetitions, of sums r + s, r >= s, such that 1/r + 1/s = (r + s)/10^k for some k >= 0. A103184

Length of shortest prefix of the Möbius sequence (A008683) containing all possible length-n blocks that appear. A280468

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (0, -1, 1), (0, 1, 0), (1, 1, 0)}. A150325