125027979 has 16 divisors (see below), whose sum is σ = 179408160. Its totient is φ = 77160960.

The previous prime is 125027971. The next prime is 125027993. The reversal of 125027979 is 979720521.

It is not a de Polignac number, because 125027979 - 2³ = 125027971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125027979.

It is not an unprimeable number, because it can be changed into a prime (125027971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16984 + ... + 23205.

It is an arithmetic number, because the mean of its divisors is an integer number (11213010).

Almost surely, 2^125027979 is an apocalyptic number.

125027979 is a deficient number, since it is larger than the sum of its proper divisors (54380181).

125027979 is a wasteful number, since it uses less digits than its factorization.

125027979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40270.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 125027979 is about 11181.5910764077. The cubic root of 125027979 is about 500.0373025503.

The spelling of 125027979 in words is "one hundred twenty-five million, twenty-seven thousand, nine hundred seventy-nine".