Properties of the Number -1025

Twenty-Five

Basics

Value: -1026 → -1025 → -1024

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 41

Divisors: 1, 5, 25, 41, 205, 1025

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000000001

Octal: -2001

Duodecimal: -715

Hexadecimal: -401

Square: 1050625

Square Root: 32.01562118716424

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

a(n) = ∑_{d divides n} (-1)^{d + n/d} * d¹⁰. A321807

Dirichlet inverse of A005941. A364574

Triangle T(n,k), read by rows: T(n,k) is the numerator of (1+2^n-k+1)/(1-2^k+1). A228146

Expansion of (1 + x - x²)/((1 + x)*(1 + 2·x)). A248155

Expansion of g.f. (2·x³ + 5) / ( -x⁵ + x³ + 1). A136598

Partial sums of Berstel sequence (A007420). A178885

a(n)=n³-(n-1)³-(n-2)³-...-1. A179298

Values of n such that L(5) and N(5) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226925

Values of n such that L(16) and N(16) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227519

Expansion of e.g.f. (1 + sin(x))/exp(x). A321632