Properties of the Number 25479

Twenty-Five Thousand Four Hundred Seventy-Nine

Basics

Value: 25478 → 25479 → 25480

Parity: odd

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 19 × 149

Divisors: 1, 3, 9, 19, 57, 149, 171, 447, 1341, 2831

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110000111

Octal: 61607

Duodecimal: 128B3

Hexadecimal: 6387

Square: 649179441

Square Root: 159.62142713307634

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

For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u·x+v·y with u,v minimal; a(n) = n⁴*s, where s is the population variance of the values of |v|. A345690

a(n+1)-+a(n)=prime, a(n+1)*a(n)=Average of twin prime pairs, a(1)=1,a(2)=4. A154493

a(n) = index of second occurrence of A161926(n) in A114381. A161927

Sums of pairs of betrothed (or quasi-amicable) numbers. A179612

G.f.: ∑_n>=0 xⁿ / ∏_{k=n*(n-1)/2+1..n*(n+1)/2} (1 - k·x). A249637

Numbers which can be written uniquely as x⁴ + y*(2y+1) + z*(3z+1), where x,y,z are integers with x>=0. A334147

Largest exponents of perfect powers (A001597). A25479