189137125 has 16 divisors (see below), whose sum is σ = 240505200. Its totient is φ = 148449600.

The previous prime is 189137111. The next prime is 189137129. The reversal of 189137125 is 521731981.

It can be written as a sum of positive squares in 8 ways, for example, as 71132356 + 118004769 = 8434^2 + 10863^2 .

It is not a de Polignac number, because 189137125 - 2⁵ = 189137093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189137129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7650 + ... + 20899.

It is an arithmetic number, because the mean of its divisors is an integer number (15031575).

Almost surely, 2^189137125 is an apocalyptic number.

It is an amenable number.

189137125 is a deficient number, since it is larger than the sum of its proper divisors (51368075).

189137125 is an equidigital number, since it uses as much as digits as its factorization.

189137125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28617 (or 28607 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 189137125 is about 13752.7133686411. The cubic root of 189137125 is about 574.0181100042.

The spelling of 189137125 in words is "one hundred eighty-nine million, one hundred thirty-seven thousand, one hundred twenty-five".