28552825 has 24 divisors (see below), whose sum is σ = 40747392. Its totient is φ = 19441920.

The previous prime is 28552793. The next prime is 28552837. The reversal of 28552825 is 52825582.

It is not a de Polignac number, because 28552825 - 2⁵ = 28552793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28737 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (1697808).

Almost surely, 2^28552825 is an apocalyptic number.

28552825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28552825 is a deficient number, since it is larger than the sum of its proper divisors (12194567).

28552825 is a wasteful number, since it uses less digits than its factorization.

28552825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1156 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 28552825 is about 5343.4843501221. The cubic root of 28552825 is about 305.6443423648.

The spelling of 28552825 in words is "twenty-eight million, five hundred fifty-two thousand, eight hundred twenty-five".