Properties of the Number 25667

Twenty-Five Thousand Six Hundred Sixty-Seven

Basics

Value: 25666 → 25667 → 25668

Parity: odd

Prime: Yes

Previous Prime: 25657

Next Prime: 25673

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 25667

Divisors: 1, 25667

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010001000011

Octal: 62103

Duodecimal: 12A2B

Hexadecimal: 6443

Square: 658794889

Square Root: 160.2092381855678

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

Smallest odd prime base q such that p³ divides q^p-1 - 1, where p = prime(n). A125637

a(n) is the smallest b > 1 such that p = prime(n) satisfies b^p-1 == 1 (mod p³). A249275

Beginning with 3, least prime such that concatenation of first n terms and its digit reversal both are primes. A113584

Least k > 2 such that (n^k - 1)/(n-1) is prime, or 0 if no such prime exists. A128164

The $620 prime list. A18188

Primes of the form (prime(prime(k)) + prime(prime(k+1)))/2. A98042

Expansion of (1-q)^k/∏_j=1..k (1-q^j) for k=16. A275644

Numbers k such that (18^k - 1)/17 is prime. A133857

Primes of the form 3·k² + 9·k + 5. A171838

Number of composite Lucas numbers between the prime Lucas numbers A005479(n) and A005479(n+1). A245472