189045925 has 12 divisors (see below), whose sum is σ = 242501220. Its totient is φ = 146021120.

The previous prime is 189045917. The next prime is 189045929. The reversal of 189045925 is 529540981.

It can be written as a sum of positive squares in 6 ways, for example, as 1520289 + 187525636 = 1233^2 + 13694^2 .

It is not a de Polignac number, because 189045925 - 2³ = 189045917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189045929) 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 11 ways as a sum of consecutive naturals, for example, 129652 + ... + 131101.

It is an arithmetic number, because the mean of its divisors is an integer number (20208435).

Almost surely, 2^189045925 is an apocalyptic number.

It is an amenable number.

189045925 is a deficient number, since it is larger than the sum of its proper divisors (53455295).

189045925 is a wasteful number, since it uses less digits than its factorization.

189045925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260792 (or 260787 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 189045925 is about 13749.3972595165. The cubic root of 189045925 is about 573.9258332708.

The spelling of 189045925 in words is "one hundred eighty-nine million, forty-five thousand, nine hundred twenty-five".