Properties of the Number 25725

Twenty-Five Thousand Seven Hundred Twenty-Five

Basics

Value: 25724 → 25725 → 25726

Parity: odd

Prime: No

Previous Prime: 25717

Next Prime: 25733

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 7 ³

Divisors: 1, 3, 5, 7, 15, 21, 25, 35, 49, 75

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010001111101

Octal: 62175

Duodecimal: 12A79

Hexadecimal: 647d

Square: 661775625

Square Root: 160.3901493234544

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

Numbers whose k-th arithmetic derivative is zero for some k>0, ordered by their position in A276086. A351255

Numbers with exactly 3 distinct odd prime divisors {3,5,7}. A147576

a(n) = gcd(A260443(n), A260443(n+1)). A277198

Positive integers k = p₁^e_1·p₂^e_2·p₃^e_3, such that the points (p₁, e₁), (p₂, e₂) and (p₃, e₃) lie on a straight line with nonzero slope. A389340

a(n) = 21·n². A64762

a(n) = ∑_k=0..n k⁵ * 2^n-k * binomial(n,k). A383139

Numbers k such that between k and the next prime there are gpf(k) numbers, where gpf(k) denotes the largest prime factor of k. A235425

Square root of the prime factor form (A276086) of the primorial base expansion, computed for such numbers for which it is a square. A328834

Numbers k such that k and k² use only the digits 1, 2, 5, 6 and 7. A137004

Triangle read by rows, defined by T(n,k)=binomial(n,k)*|Stirling1(n,k)|, 0<=k<=n. A187555