Properties of the Number 25693

Twenty-Five Thousand Six Hundred Ninety-Three

Basics

Value: 25692 → 25693 → 25694

Parity: odd

Prime: Yes

Previous Prime: 25679

Next Prime: 25703

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 25693

Divisors: 1, 25693

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010001011101

Octal: 62135

Duodecimal: 12A51

Hexadecimal: 645d

Square: 660130249

Square Root: 160.29036153181514

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 prime p such that M(n)²-p·M(n)-1 is prime with M(n)= Mersenne primes =A000668(n). A139428

Prime p1 of consecutive primes p1, p2, where p2-p1=10, and p1, p2 are in different centuries. A160500

Primes of form 5+38·n². A173554

Expansion of ∏_k>=1 1/(1 - (5·k-4)*x^5·k-4). A265834

Numbers k such that (prime(j)-1)² + 1 is prime for k <= j <= k + 2. A376522

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 11. A31599

Primes p such that 2·p³-+15 are also prime. A174364

First of three consecutive primes p,q,r such that r*(p+q) + p·q and r*(p+q) - p·q are prime. A358382

a(n) is the smallest k such that k!'s prime(n)-smooth part is less than its prime(n+1)-rough part. A360316

Index of 2ⁿ within the sequence of the numbers of the form 2ⁱ*7^j. A25693