125165139 has 8 divisors (see below), whose sum is σ = 182058432. Its totient is φ = 75857640.

The previous prime is 125165123. The next prime is 125165167. The reversal of 125165139 is 931561521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125165139 - 2⁴ = 125165123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3792883 = 125165139 / (1 + 2 + 5 + 1 + 6 + 5 + 1 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (125165039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896409 + ... + 1896474.

It is an arithmetic number, because the mean of its divisors is an integer number (22757304).

Almost surely, 2^125165139 is an apocalyptic number.

125165139 is a deficient number, since it is larger than the sum of its proper divisors (56893293).

125165139 is a wasteful number, since it uses less digits than its factorization.

125165139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792897.

The product of its digits is 8100, while the sum is 33.

The square root of 125165139 is about 11187.7226905211. The cubic root of 125165139 is about 500.2200884413.

The spelling of 125165139 in words is "one hundred twenty-five million, one hundred sixty-five thousand, one hundred thirty-nine".