Properties of the Number 31525

Thirty-One Thousand Five Hundred Twenty-Five

Basics

Value: 31524 → 31525 → 31526

Parity: odd

Prime: No

Previous Prime: 31517

Next Prime: 31531

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 13 × 97

Divisors: 1, 5, 13, 25, 65, 97, 325, 485, 1261, 2425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101100100101

Octal: 75445

Duodecimal: 162B1

Hexadecimal: 7b25

Square: 993825625

Square Root: 177.55280904564702

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

Numbers m that are the hypotenuse of exactly 22 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 22 ways. A97103

T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero. A250561

a(n) = (4·n³ + n² - 3·n)/2. A172073

a(n) = prime(n)*T(n), where T = A000217. A196421

Numbers that are the sum of 2 nonzero squares in 6 or more ways. A25297

Numbers that are the sum of 2 distinct nonzero squares in 6 or more ways. A25316

Numbers that are the sum of 2 nonzero squares in exactly 6 ways. A25289

Row sums in A083175. A83175

Numbers m such that m = p² + k², with p > 0, where p = A007954(m) = the product of digits of m. A334557

Numbers that are the sum of 2 distinct nonzero squares in exactly 6 ways. A25307