25556928 has 28 divisors (see below), whose sum is σ = 67619880. Its totient is φ = 8518912.

The previous prime is 25556893. The next prime is 25556941. The reversal of 25556928 is 82965552.

It is a self number, because there is not a number n which added to its sum of digits gives 25556928.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 66363 + ... + 66746.

Almost surely, 2^25556928 is an apocalyptic number.

It is an amenable number.

25556928 is an abundant number, since it is smaller than the sum of its proper divisors (42062952).

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

25556928 is a wasteful number, since it uses less digits than its factorization.

25556928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133124 (or 133114 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The square root of 25556928 is about 5055.3860386720. The cubic root of 25556928 is about 294.5571368910.

The spelling of 25556928 in words is "twenty-five million, five hundred fifty-six thousand, nine hundred twenty-eight".