25389428 has 12 divisors (see below), whose sum is σ = 44523360. Its totient is φ = 12668472.

The previous prime is 25389421. The next prime is 25389443. The reversal of 25389428 is 82498352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25389421) 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, 4298 + ... + 8321.

It is an arithmetic number, because the mean of its divisors is an integer number (3710280).

Almost surely, 2^25389428 is an apocalyptic number.

It is an amenable number.

25389428 is a deficient number, since it is larger than the sum of its proper divisors (19133932).

25389428 is a wasteful number, since it uses less digits than its factorization.

25389428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13126 (or 13124 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 25389428 is about 5038.7923156248. The cubic root of 25389428 is about 293.9122171477.

The spelling of 25389428 in words is "twenty-five million, three hundred eighty-nine thousand, four hundred twenty-eight".