Properties of the Number 27725

Twenty-Seven Thousand Seven Hundred Twenty-Five

Basics

Value: 27724 → 27725 → 27726

Parity: odd

Prime: No

Previous Prime: 27701

Next Prime: 27733

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 1109

Divisors: 1, 5, 25, 1109, 5545, 27725

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110001001101

Octal: 66115

Duodecimal: 14065

Hexadecimal: 6c4d

Square: 768675625

Square Root: 166.50825805346713

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

dot_product(n,n-1,...2,1)*(6,7,...,n,1,2,3,4,5). A26063

Numbers k such that k and k² use only the digits 2, 5, 6, 7 and 8. A137111

Expansion of -(x·sqrt(5·x² -6·x +1) -2·x³ +3·x² -x) / ((3·x² -4·x +1) * sqrt(5·x² -6·x +1) +5·x³ -11·x² +7·x -1). A239201

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 213", based on the 5-celled von Neumann neighborhood. A270903

a(n) = ∑_k=0..n ceiling((1 + sqrt(2))^k). A279101

a(n) = floor(10000·log(n)). A4243

Numbers k such that (k+j) mod (2+j) = 1 for j from 0 to 10 and (k+11) mod 13 <> 1. A96027

Palindromes of form k² + k + 8. A27725