189873488925 has 18 divisors (see below), whose sum is σ = 340084516122. Its totient is φ = 101265860640.

The previous prime is 189873488921. The next prime is 189873488939. The reversal of 189873488925 is 529884378981.

189873488925 is a `hidden beast` number, since 189 + 8 + 7 + 348 + 89 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1693651716 + 188179837209 = 41154^2 + 433797^2 .

It is not a de Polignac number, because 189873488925 - 2² = 189873488921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189873488921) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 421940862 + ... + 421941311.

It is an arithmetic number, because the mean of its divisors is an integer number (18893584229).

Almost surely, 2^189873488925 is an apocalyptic number.

189873488925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189873488925 is a deficient number, since it is larger than the sum of its proper divisors (150211027197).

189873488925 is a wasteful number, since it uses less digits than its factorization.

189873488925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843882189 (or 843882181 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 72.

The spelling of 189873488925 in words is "one hundred eighty-nine billion, eight hundred seventy-three million, four hundred eighty-eight thousand, nine hundred twenty-five".