28525365 has 80 divisors (see below), whose sum is σ = 58893120. Its totient is φ = 13063680.

The previous prime is 28525361. The next prime is 28525373. The reversal of 28525365 is 56352582.

It is a happy number.

It is not a de Polignac number, because 28525365 - 2² = 28525361 is a prime.

Its product of digits (72000) is a multiple of the sum of its prime divisors (375).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525361) 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 79 ways as a sum of consecutive naturals, for example, 84477 + ... + 84813.

It is an arithmetic number, because the mean of its divisors is an integer number (736164).

Almost surely, 2^28525365 is an apocalyptic number.

It is an amenable number.

28525365 is an abundant number, since it is smaller than the sum of its proper divisors (30367755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28525365 is a wasteful number, since it uses less digits than its factorization.

28525365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 375 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 28525365 is about 5340.9142475797. The cubic root of 28525365 is about 305.5463288796.

The spelling of 28525365 in words is "twenty-eight million, five hundred twenty-five thousand, three hundred sixty-five".