188990125 has 8 divisors (see below), whose sum is σ = 235859832. Its totient is φ = 151192000.

The previous prime is 188990069. The next prime is 188990147. The reversal of 188990125 is 521099881.

188990125 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 4 ways, for example, as 37527876 + 151462249 = 6126^2 + 12307^2 .

It is not a de Polignac number, because 188990125 - 2⁹ = 188989613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755836 + ... + 756085.

It is an arithmetic number, because the mean of its divisors is an integer number (29482479).

Almost surely, 2^188990125 is an apocalyptic number.

It is an amenable number.

188990125 is a deficient number, since it is larger than the sum of its proper divisors (46869707).

188990125 is an equidigital number, since it uses as much as digits as its factorization.

188990125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511936 (or 1511926 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 188990125 is about 13747.3679298984. The cubic root of 188990125 is about 573.8693598452.

The spelling of 188990125 in words is "one hundred eighty-eight million, nine hundred ninety thousand, one hundred twenty-five".