Properties of the Number 25200

Twenty-Five Thousand Two Hundred

Basics

Value: 25199 → 25200 → 25201

Parity: even

Prime: No

Previous Prime: 25189

Next Prime: 25219

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 5 ² × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110001001110000

Octal: 61160

Duodecimal: 12700

Hexadecimal: 6270

Square: 635040000

Square Root: 158.74507866387543

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

Highly composite numbers: numbers n where d(n), the number of divisors of n (A000005), increases to a record. A2182

Superabundant [or super-abundant] numbers: n such that σ(n)/n > σ(m)/m for all m < n, σ(n) being A000203(n), the sum of the divisors of n. A4394

Triangular array a(n,k) = (1/k)*∑_i=0..k (-1)^k-i*binomial(k,i)*iⁿ; n >= 1, 1 <= k <= n, read by rows. A28246

The minimal numbers: sequence A005179 arranged in increasing order. A7416

a(n) = n² * (n² - 1)/2. A83374

Exponential abundant numbers: integers k for which A126164(k) > k, or equivalently for which A051377(k) > 2k. A129575

Triangle read by rows: The n-th derivative of the logistic function written in terms of y, where y = 1/(1 + exp(-x)). A163626

Triangle read by rows. A generalization of unsigned Lah numbers, called L[4,1]. A48854

Numerator of the harmonic mean of the first n positive integers. A102928

The first n-fold (at least) intrinsically 2-palindromic number (in base ten). A171701