28975325 has 12 divisors (see below), whose sum is σ = 36027828. Its totient is φ = 23116800.

The previous prime is 28975307. The next prime is 28975333. The reversal of 28975325 is 52357982.

It can be written as a sum of positive squares in 6 ways, for example, as 1653796 + 27321529 = 1286^2 + 5227^2 .

It is not a de Polignac number, because 28975325 - 2¹⁶ = 28909789 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 9149 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (3002319).

Almost surely, 2^28975325 is an apocalyptic number.

28975325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28975325 is a deficient number, since it is larger than the sum of its proper divisors (7052503).

28975325 is a wasteful number, since it uses less digits than its factorization.

28975325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 3179 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 28975325 is about 5382.8733033576. The cubic root of 28975325 is about 307.1445205813.

The spelling of 28975325 in words is "twenty-eight million, nine hundred seventy-five thousand, three hundred twenty-five".