125172039 has 8 divisors (see below), whose sum is σ = 166974192. Its totient is φ = 83408960.

The previous prime is 125172029. The next prime is 125172043. The reversal of 125172039 is 930271521.

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 125172039 - 2⁴ = 125172023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125171997 and 125172015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125172029) 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, 1224 + ... + 15869.

It is an arithmetic number, because the mean of its divisors is an integer number (20871774).

Almost surely, 2^125172039 is an apocalyptic number.

125172039 is a deficient number, since it is larger than the sum of its proper divisors (41802153).

125172039 is a wasteful number, since it uses less digits than its factorization.

125172039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19537.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 125172039 is about 11188.0310600212. The cubic root of 125172039 is about 500.2292801785.

The spelling of 125172039 in words is "one hundred twenty-five million, one hundred seventy-two thousand, thirty-nine".