125573971658 has 8 divisors (see below), whose sum is σ = 188494645860. Its totient is φ = 62742423040.

The previous prime is 125573971613. The next prime is 125573971667. The reversal of 125573971658 is 856179375521.

It can be written as a sum of positive squares in 2 ways, for example, as 99176495929 + 26397475729 = 314923^2 + 162473^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 125573971597 and 125573971606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22277873 + ... + 22283508.

Almost surely, 2^125573971658 is an apocalyptic number.

125573971658 is a deficient number, since it is larger than the sum of its proper divisors (62920674202).

125573971658 is a wasteful number, since it uses less digits than its factorization.

125573971658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44562792.

The product of its digits is 15876000, while the sum is 59.

The spelling of 125573971658 in words is "one hundred twenty-five billion, five hundred seventy-three million, nine hundred seventy-one thousand, six hundred fifty-eight".