Properties of the Number -1125

One Hundred Twenty-Five

Basics

Value: -1126 → -1125 → -1124

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ³

Divisors: 1, 3, 5, 9, 15, 25, 45, 75, 125, 225

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10001100101

Octal: -2145

Duodecimal: -799

Hexadecimal: -465

Square: 1265625

Square Root: 33.54101966249684

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Irregular triangle read by rows of normalized Girard-Waring formula (cf. A210258), for m=6 data values. A288211

Expansion of 1/(1 + x*∏_k>=1 (1 - x^k)). A331484

a(1) = 1, a(2) = -5; a(n) = -n² * ∑_{d∣n, d < n} a(d) / d². A359485

Dirichlet inverse of A358764. A359427

a(n) = floor(d(n)/18^n-1) where d(n) = 0, 1, -8, 352, -5120,.. and d(n) = -8·d(n-1) +288·d(n-2). A174427

Expansion of ∏_m>=1 (1-m·q^m)²⁵. A22685

Exponential transform of Stirling1 triangle A008275. A55924

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A384897. A384902

Numerator of Hermite(n, 3/16). A159522

Values of n such that L(3) and N(3) 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. A226923