125165879 has 4 divisors (see below), whose sum is σ = 129203520. Its totient is φ = 121128240.

The previous prime is 125165869. The next prime is 125165891. The reversal of 125165879 is 978561521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125165879 - 2²⁴ = 108388663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125165869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018774 + ... + 2018835.

It is an arithmetic number, because the mean of its divisors is an integer number (32300880).

Almost surely, 2^125165879 is an apocalyptic number.

125165879 is a deficient number, since it is larger than the sum of its proper divisors (4037641).

125165879 is an equidigital number, since it uses as much as digits as its factorization.

125165879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037640.

The product of its digits is 151200, while the sum is 44.

The square root of 125165879 is about 11187.7557624396. The cubic root of 125165879 is about 500.2210742380.

The spelling of 125165879 in words is "one hundred twenty-five million, one hundred sixty-five thousand, eight hundred seventy-nine".