Properties of the Number 22505

Twenty-Two Thousand Five Hundred Five

Basics

Value: 22504 → 22505 → 22506

Parity: odd

Prime: No

Previous Prime: 22501

Next Prime: 22511

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 7 × 643

Divisors: 1, 5, 7, 35, 643, 3215, 4501, 22505

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 101011111101001

Octal: 53751

Duodecimal: 11035

Hexadecimal: 57e9

Square: 506475025

Square Root: 150.01666574084362

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 atoms in a decahedron with n shells. A4068

Position where n (presumably) appears the last time in A107261, or 0 if n keeps appearing. A107262

a(n) = 25·n² + 5. A158445

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 60. A31738

Number of n-digit primes whose sum of digits is 7. A259144

Maximum value of the cyclic convolution of the first n positive integers with themselves. A294172

a(n) is the number of 2 X 2 matrices with elements 1..n where at least one row, at least one column and at least one of the two diagonals is strictly increasing. A391092

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 10000-11111-00001 pattern in any orientation. A147070

Describe the previous term! (method B - initial term is 9). A22505

Number of (n+2)X7 binary arrays avoiding patterns 000 and 101 in rows and columns. A203088