189420125 has 12 divisors (see below), whose sum is σ = 236588508. Its totient is φ = 151413000.

The previous prime is 189420097. The next prime is 189420151. The reversal of 189420125 is 521024981.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

189420125 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 2 ways, for example, as 6061444 + 183358681 = 2462^2 + 13541^2 .

It is not a de Polignac number, because 189420125 - 2¹⁰ = 189419101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189420091 and 189420100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153260 + ... + 154490.

It is an arithmetic number, because the mean of its divisors is an integer number (19715709).

Almost surely, 2^189420125 is an apocalyptic number.

It is an amenable number.

189420125 is a deficient number, since it is larger than the sum of its proper divisors (47168383).

189420125 is an frugal number, since it uses more digits than its factorization.

189420125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 189420125 is about 13762.9984015112. The cubic root of 189420125 is about 574.3042624820.

The spelling of 189420125 in words is "one hundred eighty-nine million, four hundred twenty thousand, one hundred twenty-five".