25388628 has 48 divisors (see below), whose sum is σ = 61716480. Its totient is φ = 8114400.

The previous prime is 25388611. The next prime is 25388647. The reversal of 25388628 is 82688352.

It is a self number, because there is not a number n which added to its sum of digits gives 25388628.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51463 + ... + 51953.

It is an arithmetic number, because the mean of its divisors is an integer number (1285760).

Almost surely, 2^25388628 is an apocalyptic number.

It is an amenable number.

25388628 is an abundant number, since it is smaller than the sum of its proper divisors (36327852).

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

25388628 is a wasteful number, since it uses less digits than its factorization.

25388628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 666 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 25388628 is about 5038.7129308981. The cubic root of 25388628 is about 293.9091301378.

The spelling of 25388628 in words is "twenty-five million, three hundred eighty-eight thousand, six hundred twenty-eight".