125728354171 has 24 divisors (see below), whose sum is σ = 147357690480. Its totient is φ = 106957368000.

The previous prime is 125728354153. The next prime is 125728354189. The reversal of 125728354171 is 171453827521.

It is an interprime number because it is at equal distance from previous prime (125728354153) and next prime (125728354189).

It is not a de Polignac number, because 125728354171 - 2⁵ = 125728354139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125728352171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4500396 + ... + 4528246.

It is an arithmetic number, because the mean of its divisors is an integer number (6139903770).

Almost surely, 2^125728354171 is an apocalyptic number.

125728354171 is a deficient number, since it is larger than the sum of its proper divisors (21629336309).

125728354171 is a wasteful number, since it uses less digits than its factorization.

125728354171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28555 (or 28548 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The spelling of 125728354171 in words is "one hundred twenty-five billion, seven hundred twenty-eight million, three hundred fifty-four thousand, one hundred seventy-one".