125567198729 has 32 divisors (see below), whose sum is σ = 150408769536. Its totient is φ = 102493892160.

The previous prime is 125567198717. The next prime is 125567198747. The reversal of 125567198729 is 927891765521.

It is a cyclic number.

It is not a de Polignac number, because 125567198729 - 2²⁰ = 125566150153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125567197729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78136844 + ... + 78138450.

It is an arithmetic number, because the mean of its divisors is an integer number (4700274048).

Almost surely, 2^125567198729 is an apocalyptic number.

It is an amenable number.

125567198729 is a deficient number, since it is larger than the sum of its proper divisors (24841570807).

125567198729 is a wasteful number, since it uses less digits than its factorization.

125567198729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485.

The product of its digits is 19051200, while the sum is 62.

The spelling of 125567198729 in words is "one hundred twenty-five billion, five hundred sixty-seven million, one hundred ninety-eight thousand, seven hundred twenty-nine".