28925025 has 24 divisors (see below), whose sum is σ = 48940320. Its totient is φ = 15066240.

The previous prime is 28924997. The next prime is 28925027. The reversal of 28925025 is 52052982.

It is not a de Polignac number, because 28925025 - 2¹¹ = 28922977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28925027) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1260 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (2039180).

Almost surely, 2^28925025 is an apocalyptic number.

28925025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28925025 is a deficient number, since it is larger than the sum of its proper divisors (20015295).

28925025 is a wasteful number, since it uses less digits than its factorization.

28925025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9025 (or 9020 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 28925025 is about 5378.1990480085. The cubic root of 28925025 is about 306.9666874555.

The spelling of 28925025 in words is "twenty-eight million, nine hundred twenty-five thousand, twenty-five".