Properties of the Number 25678

Twenty-Five Thousand Six Hundred Seventy-Eight

Basics

Value: 25677 → 25678 → 25679

Parity: even

Prime: No

Previous Prime: 25673

Next Prime: 25679

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 37 × 347

Divisors: 1, 2, 37, 74, 347, 694, 12839, 25678

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010001001110

Octal: 62116

Duodecimal: 12A3A

Hexadecimal: 644e

Square: 659359684

Square Root: 160.24356461337223

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

a(n) is the smallest positive d such that the n-th prime is the smallest prime p for which p+d is also prime. A101042

A101042 sorted. There exists a prime p for which a(n) is the smallest positive d such that p is the smallest prime where p+d is also prime. A101043

d such that the smallest prime p for which p+d is also prime is larger than for any smaller d. A101046

G.f. of the z² coefficients of the FP2 in the third column of the A156925 matrix. A156935

Fibonacci numbers with the base 10 digits sorted into increasing order. A272918

Numerators of continued fraction convergents to sqrt(726). A42398

The number of partitions of n which represent Chomp positions with Sprague-Grundy value 9. A284782

Start with a(1)=1; for n >= 1, a(n+1)=a(n)+a(k) with k=[n-n-th digit of "e"]. If k<0 or k=0, then a(k)=0. A133392

Even numbers k such that if a person is born in year k and lives not more than 100 years, then he never celebrates his prime birthday on a prime year. A124658

Append three digits, each increasing by one modulo 10 from the last digit of the nonnegative integers. 0 -> 123, 1 -> 1234 2 -> 2345, ... , 9 -> 9012, 10 -> 10123, etc. A167231