25786 has 4 divisors (see below), whose sum is σ = 38682. Its totient is φ = 12892.

The previous prime is 25771. The next prime is 25793. The reversal of 25786 is 68752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21025 + 4761 = 145^2 + 69^2 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6445 + ... + 6448.

2²⁵⁷⁸⁶ is an apocalyptic number.

25786 is a deficient number, since it is larger than the sum of its proper divisors (12896).

25786 is a wasteful number, since it uses less digits than its factorization.

25786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895.

The product of its digits is 3360, while the sum is 28.

The square root of 25786 is about 160.5801980320. The cubic root of 25786 is about 29.5434579250.

It can be divided in two parts, 257 and 86, that added together give a palindrome (343).

The spelling of 25786 in words is "twenty-five thousand, seven hundred eighty-six".