25539312 has 20 divisors (see below), whose sum is σ = 65976680. Its totient is φ = 8513088.

The previous prime is 25539299. The next prime is 25539313. The reversal of 25539312 is 21393552.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25539312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25539313) 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, 265987 + ... + 266082.

It is an arithmetic number, because the mean of its divisors is an integer number (3298834).

Almost surely, 2^25539312 is an apocalyptic number.

It is an amenable number.

25539312 is an abundant number, since it is smaller than the sum of its proper divisors (40437368).

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

25539312 is a wasteful number, since it uses less digits than its factorization.

25539312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532080 (or 532074 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 25539312 is about 5053.6434381543. The cubic root of 25539312 is about 294.4894434239.

Subtracting from 25539312 its reverse (21393552), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 25539312 in words is "twenty-five million, five hundred thirty-nine thousand, three hundred twelve".