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Properties of the Number -20125

Twenty Thousand One Hundred Twenty-Five

Basics

Value: -20126 → -20125 → -20124

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 3 × 7 × 23

Divisors: 1, 5, 7, 23, 25, 35, 115, 125, 161, 175

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111010011101

Octal: -47235

Duodecimal: -B791

Hexadecimal: -4e9d

Square: 405015625

Square Root: 141.86260959111107

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 partitions of n such that the set of even parts has only one element. A90867
Number of n-bead necklace structures using exactly three different colored beads. A56296
Number of regions formed when n equally spaced points are placed around a circle and all pairs of points are joined by an interior arc whose radius equals the circle's radius. A371253
Number of (w,x,y,z) with all terms in {1,...,n} and w+x<=y+z. A212560
Number of primitive (period n) n-bead necklace structures using exactly three different colored beads. A56304
Number of n-bead necklace structures which are not self-equivalent under a nonzero rotation using exactly three different colored beads. A328740
The number of vertices on a 2 by 1 ellipse formed by the straight line segments mutually connecting all points formed by dividing the ellipse into 2n equal angle sectors from its origin. A341762
a(n) = n*(n + 1)*(11·n2 + 11·n - 10)/24. A264854
a(n) = n * [1 + sum(k=1 to n) prime(k)]. A83725
Smallest odd number greater than any previous term such that it divides the concatenation of all the previous terms and itself; begin with 1. A228806