25528312 has 8 divisors (see below), whose sum is σ = 47865600. Its totient is φ = 12764152.

The previous prime is 25528301. The next prime is 25528313. The reversal of 25528312 is 21382552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1595512 + ... + 1595527.

It is an arithmetic number, because the mean of its divisors is an integer number (5983200).

Almost surely, 2^25528312 is an apocalyptic number.

It is an amenable number.

25528312 is a deficient number, since it is larger than the sum of its proper divisors (22337288).

25528312 is a wasteful number, since it uses less digits than its factorization.

25528312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191045 (or 3191041 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 25528312 is about 5052.5549972267. The cubic root of 25528312 is about 294.4471576454.

Subtracting from 25528312 its reverse (21382552), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 25528312 in words is "twenty-five million, five hundred twenty-eight thousand, three hundred twelve".