25257128 has 32 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 11149248.

The previous prime is 25257119. The next prime is 25257131. The reversal of 25257128 is 82175252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25257094 and 25257103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2888 + ... + 7671.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^25257128 is an apocalyptic number.

It is an amenable number.

25257128 is an abundant number, since it is smaller than the sum of its proper divisors (27965272).

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

25257128 is a wasteful number, since it uses less digits than its factorization.

25257128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601 (or 10597 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 25257128 is about 5025.6470230210. The cubic root of 25257128 is about 293.4008189539.

The spelling of 25257128 in words is "twenty-five million, two hundred fifty-seven thousand, one hundred twenty-eight".