25289428 has 12 divisors (see below), whose sum is σ = 45684352. Its totient is φ = 12236760.

The previous prime is 25289377. The next prime is 25289477. The reversal of 25289428 is 82498252.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 101850 + ... + 102097.

Almost surely, 2^25289428 is an apocalyptic number.

It is an amenable number.

25289428 is a deficient number, since it is larger than the sum of its proper divisors (20394924).

25289428 is a wasteful number, since it uses less digits than its factorization.

25289428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203982 (or 203980 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 25289428 is about 5028.8595128518. The cubic root of 25289428 is about 293.5258372525.

The spelling of 25289428 in words is "twenty-five million, two hundred eighty-nine thousand, four hundred twenty-eight".