Properties of the Number 25551

Twenty-Five Thousand Five Hundred Fifty-One

Basics

Value: 25550 → 25551 → 25552

Parity: odd

Prime: No

Previous Prime: 25541

Next Prime: 25561

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 17 × 167

Divisors: 1, 3, 9, 17, 51, 153, 167, 501, 1503, 2839

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 110001111001111

Octal: 61717

Duodecimal: 12953

Hexadecimal: 63cf

Square: 652853601

Square Root: 159.84680165708664

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

Powers of cube root of 21 rounded up. A18038

Numbers n such that 7ⁿ + 6 is prime. A217130

Number of functions f:{1,2,...,n}->{1,2,...,n} with odd cycles only. A116956

Expansion of (1 / theta₄(x) - 1)⁶ / 64. A341367

Triangle read by rows: T(n,k) number of ways of partitioning the (n+3)-element multiset {1,1,1,1,2,3,...,n} into exactly k nonempty parts, n >= 0 and 1 <= k <= n + 3. A291118

Starting positions of strings of three 7's in the decimal expansion of π. A83631

a(n) = (10·n+3)*(10·n+17). A152579

G.f. satisfies: A(x) = (1+x·A(x))*(1+x·A(x)²)*(1+x·A(x)³). A212070

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 0, 1), (0, -1, 1), (0, 1, 1), (1, 0, -1)}. A148977

a(n) = 3ⁿ*(3ⁿ + 1)/2. A25551