Properties of the Number 25391

Twenty-Five Thousand Three Hundred Ninety-One

Basics

Value: 25390 → 25391 → 25392

Parity: odd

Prime: Yes

Previous Prime: 25373

Next Prime: 25409

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 25391

Divisors: 1, 25391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001100101111

Octal: 61457

Duodecimal: 1283B

Hexadecimal: 632f

Square: 644702881

Square Root: 159.34553649224065

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

Balanced primes of order four. A82079

Primes p whose reciprocal has period (p-1)/10. A56215

Father primes of order 11. A136080

T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nXk array. A220406

Primes that are palindromic in base 5. A29973

Primes of the form 3·m² - 1. A89682

Consider all distinct functions f representable as x -> x^x^...^x with n x's and parentheses inserted in all possible ways; sequence gives difference between numbers of f with f(0)=1 and numbers of f with f(0)=0, with conventions that 0⁰=1⁰=1¹=1, 0¹=0. A211192

a(n) is the smallest prime divisor of the number obtained from concatenation of the first n primes. A104644

Primes of the form 12·n²-1. A143830

a(n) = prime(100·n). A31921