Properties of the Number 25228

Twenty-Five Thousand Two Hundred Twenty-Eight

Basics

Value: 25227 → 25228 → 25229

Parity: even

Prime: No

Previous Prime: 25219

Next Prime: 25229

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7 × 17 × 53

Divisors: 1, 2, 4, 7, 14, 17, 28, 34, 53, 68

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001010001100

Octal: 61214

Duodecimal: 12724

Hexadecimal: 628c

Square: 636451984

Square Root: 158.8332458901473

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

Susceptibility series H₅ for 2-dimensional Ising model (divided by 2). A54389

Numbers k that divide ∑_j=1..k A051953(j) where A051953(j) = j - φ(j). Arithmetic mean of first k cototient values is an integer. A63986

Number of squares of all sizes in 3·n*(n+1)/2-ominoes in form of three-quarters of Aztec diamonds. A258440

Numerators of continued fraction convergents to sqrt(820). A42582

Structured tetragonal anti-prism numbers. A100182

Number of Dyck paths of semilength n having exactly 5 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)). A243417

Numbers which when multiplied by any repunit prime Rp give a Smith number. A104167

Earliest sequence such that (x+y) | a(xy) for all x>=1, y>=1. A169901

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 241", based on the 5-celled von Neumann neighborhood. A270990

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 2,1. A25228