28608325 has 6 divisors (see below), whose sum is σ = 35474354. Its totient is φ = 22886640.

The previous prime is 28608311. The next prime is 28608337. The reversal of 28608325 is 52380682.

It can be written as a sum of positive squares in 3 ways, for example, as 919681 + 27688644 = 959^2 + 5262^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28608325 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572142 + ... + 572191.

Almost surely, 2^28608325 is an apocalyptic number.

28608325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28608325 is a deficient number, since it is larger than the sum of its proper divisors (6866029).

28608325 is a wasteful number, since it uses less digits than its factorization.

28608325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144343 (or 1144338 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28608325 is about 5348.6750695850. The cubic root of 28608325 is about 305.8422478492.

The spelling of 28608325 in words is "twenty-eight million, six hundred eight thousand, three hundred twenty-five".