188728325 has 12 divisors (see below), whose sum is σ = 234221988. Its totient is φ = 150854400.

The previous prime is 188728321. The next prime is 188728343. The reversal of 188728325 is 523827881.

188728325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2869636 + 185858689 = 1694^2 + 13633^2 .

It is not a de Polignac number, because 188728325 - 2² = 188728321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188728321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36395 + ... + 41255.

It is an arithmetic number, because the mean of its divisors is an integer number (19518499).

Almost surely, 2^188728325 is an apocalyptic number.

It is an amenable number.

188728325 is a deficient number, since it is larger than the sum of its proper divisors (45493663).

188728325 is a wasteful number, since it uses less digits than its factorization.

188728325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424 (or 6419 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 188728325 is about 13737.8428073697. The cubic root of 188728325 is about 573.6042517696.

The spelling of 188728325 in words is "one hundred eighty-eight million, seven hundred twenty-eight thousand, three hundred twenty-five".