Properties of the Number 18125

Eighteen Thousand One Hundred Twenty-Five

Basics

Value: 18124 → 18125 → 18126

Parity: odd

Prime: No

Previous Prime: 18121

Next Prime: 18127

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 ⁴ × 29

Divisors: 1, 5, 25, 29, 125, 145, 625, 725, 3625, 18125

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011011001101

Octal: 43315

Duodecimal: A5A5

Hexadecimal: 46cd

Square: 328515625

Square Root: 134.6291201783626

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

Sum of terms of n-th group in A075383. A75386

Number of partitions p of n such that (number of numbers in p that have multiplicity 1) > (number of numbers in p having multiplicity > 1). A329976

Numbers that are the sum of 2 nonzero squares in 5 or more ways. A25296

Numbers that are the sum of 2 distinct nonzero squares in 5 or more ways. A25315

a(n) = 29·n². A244635

Number of polyominoes with 2n cells and exactly one line of reflection symmetry, where that one line is parallel to the grid and passes through the corner of at least one square. A349329

G.f. satisfies: A(x) = x + 4·x² + x·A(A(A(A(A(x))))). A215118

Column 2 of triangle A370041. A370155

Numbers that are the sum of 2 nonzero squares in exactly 5 ways. A25288

Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways. A25306