Properties of the Number -725

Seven Hundred Twenty-Five

Basics

Value: -726 → -725 → -724

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 29

Divisors: 1, 5, 25, 29, 145, 725

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1011010101

Octal: -1325

Duodecimal: -505

Hexadecimal: -2d5

Square: 525625

Square Root: 26.92582403567252

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

Expansion of (1 - x)/(1 - 2·x + 3·x²) in powers of x. A87455

a(n) = ∑_k=1..n μ(k)*k³. A336277

a(n) = ∑_{k >= 0}(-1)^k*binomial(n,5·k). A289306

Expansion of 1/∑_k>=0 x^k³. A323633

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 1/sqrt(1 + 2·k*x + k*(k+4)*x²). A307819

Series expansion of the exponential generating function -tridend(-(1-exp(x))) where tridend(x) = (1 - 3·x - sqrt(1+6·x+x²)) / (4·x) (A001003). A383987

Expansion of c(q⁴) / c(q) in powers of q where c() is a cubic AGM θ function. A123649

a(n) = ∑_k>=0 (-1)^k*binomial(n, 5·k+2). A289387

Inverse Euler transform of n². A316152

First term of n-th difference sequence of (floor(r·k)), r = (1+sqrt(5))/2, k >= 0. A325745