Properties of the Number 13225

Thirteen Thousand Two Hundred Twenty-Five

Basics

Value: 13224 → 13225 → 13226

Parity: odd

Prime: No

Previous Prime: 13219

Next Prime: 13229

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 23 ²

Divisors: 1, 5, 23, 25, 115, 529, 575, 2645, 13225

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001110101001

Octal: 31651

Duodecimal: 77A1

Hexadecimal: 33a9

Square: 174900625

Square Root: 115

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

Squares of the squarefree semiprimes (p²*q²). A85986

a(n) = (3·n+1)². A16778

a(n) = (6·n + 1)². A16922

Numbers with 9 divisors. A30627

Products of squares of 2 or more distinct primes. A177492

Numbers m² for which the center part (containing the diagonal) of its symmetric representation of σ, SRS(m²), has width 1 and area m. A377654

a(n) = (4n + 3)². A16838

a(n) = (11·n + 5)². A17450

Third of a triple of squares in arithmetic progression. A198386

T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors. A283857