Properties of the Number -1325

Three Hundred Twenty-Five

Basics

Value: -1326 → -1325 → -1324

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 53

Divisors: 1, 5, 25, 53, 265, 1325

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100101101

Octal: -2455

Duodecimal: -925

Hexadecimal: -52d

Square: 1755625

Square Root: 36.40054944640259

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) = (n+1)*(2-n)/2. A80956

Expansion of (1-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 10. A60029

Expansion of ∏_k>=1 1/(1 + x^k)^k*(5·k-3/2). A295122

Row sums of number triangle related to the Jacobsthal numbers. A110325

Difference between sums of quadratic residues and non-residues modulo n (residues are not necessarily coprime to n). A255644

Values of n such that L(15) and N(15) 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. A227518

Reversion of g.f. for Euler numbers A000111(n-1). A7316

a(n) = n*(n+3)/2. A96

Odd numbers of the form p^1+4k * r², where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1. (Euler's criteria for odd perfect numbers). A228058

Centered tetrahedral numbers. A5894