125615894729 has 8 divisors (see below), whose sum is σ = 135661886472. Its totient is φ = 115624650240.

The previous prime is 125615894689. The next prime is 125615894741. The reversal of 125615894729 is 927498516521.

It can be written as a sum of positive squares in 4 ways, for example, as 16531016329 + 109084878400 = 128573^2 + 330280^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 125615894729 - 2¹² = 125615890633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125615894749) 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, 13682042 + ... + 13691219.

It is an arithmetic number, because the mean of its divisors is an integer number (16957735809).

Almost surely, 2^125615894729 is an apocalyptic number.

It is an amenable number.

125615894729 is a deficient number, since it is larger than the sum of its proper divisors (10045991743).

125615894729 is a wasteful number, since it uses less digits than its factorization.

125615894729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27373627.

The product of its digits is 10886400, while the sum is 59.

The spelling of 125615894729 in words is "one hundred twenty-five billion, six hundred fifteen million, eight hundred ninety-four thousand, seven hundred twenty-nine".