Properties of the Number 87425

Eighty-Seven Thousand Four Hundred Twenty-Five

Basics

Value: 87424 → 87425 → 87426

Parity: odd

Prime: No

Previous Prime: 87421

Next Prime: 87427

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 13 × 269

Divisors: 1, 5, 13, 25, 65, 269, 325, 1345, 3497, 6725

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010110000001

Octal: 252601

Duodecimal: 42715

Hexadecimal: 15581

Square: 7643130625

Square Root: 295.67718883945037

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

Number of nX2 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero. A303677

Number of nondecreasing integer sequences of length 10 with sum zero and sum of absolute values 2n. A158144

a(n) = 1 + 4·n*(1 + 2·n²)/3. A171272

Numerator of n/1ⁿ + (n-1)/2ⁿ + (n-2)/3ⁿ + ... + 2/(n-1)ⁿ + 1/nⁿ. A119756

Numerator of 1/n⁴ + 2/(n-1)⁴ + 3/(n-2)⁴ +...+ (n-1)/2⁴ + n. A120288

a(n) = S(5·n,5)/S(n,5) where S(n,m) = ∑_k=0..n binomial(n,k)*Fibonacci(m·k). A87425