28325625 has 20 divisors (see below), whose sum is σ = 47197392. Its totient is φ = 15106000.

The previous prime is 28325623. The next prime is 28325641. The reversal of 28325625 is 52652382.

It is not a de Polignac number, because 28325625 - 2¹ = 28325623 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28325623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5679 + ... + 9428.

Almost surely, 2^28325625 is an apocalyptic number.

28325625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28325625 is a deficient number, since it is larger than the sum of its proper divisors (18871767).

28325625 is an equidigital number, since it uses as much as digits as its factorization.

28325625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15130 (or 15115 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 28325625 is about 5322.1823531330. The cubic root of 28325625 is about 304.8314934116.

The spelling of 28325625 in words is "twenty-eight million, three hundred twenty-five thousand, six hundred twenty-five".