25439268 has 12 divisors (see below), whose sum is σ = 59358320. Its totient is φ = 8479752.

The previous prime is 25439263. The next prime is 25439279. The reversal of 25439268 is 86293452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25439263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059958 + ... + 1059981.

Almost surely, 2^25439268 is an apocalyptic number.

It is an amenable number.

25439268 is an abundant number, since it is smaller than the sum of its proper divisors (33919052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25439268 is a wasteful number, since it uses less digits than its factorization.

25439268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119946 (or 2119944 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 25439268 is about 5043.7355204253. The cubic root of 25439268 is about 294.1044101368.

It can be divided in two parts, 2543 and 9268, that added together give a palindrome (11811).

The spelling of 25439268 in words is "twenty-five million, four hundred thirty-nine thousand, two hundred sixty-eight".