125171722915 has 16 divisors (see below), whose sum is σ = 150518080512. Its totient is φ = 99929493504.

The previous prime is 125171722861. The next prime is 125171722919. The reversal of 125171722915 is 519227171521.

It is a cyclic number.

It is not a de Polignac number, because 125171722915 - 2¹⁷ = 125171591843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125171722919) 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, 11439327 + ... + 11450263.

It is an arithmetic number, because the mean of its divisors is an integer number (9407380032).

Almost surely, 2^125171722915 is an apocalyptic number.

125171722915 is a deficient number, since it is larger than the sum of its proper divisors (25346357597).

125171722915 is a wasteful number, since it uses less digits than its factorization.

125171722915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486.

The product of its digits is 88200, while the sum is 43.

The spelling of 125171722915 in words is "one hundred twenty-five billion, one hundred seventy-one million, seven hundred twenty-two thousand, nine hundred fifteen".