125238638875 has 16 divisors (see below), whose sum is σ = 178626082752. Its totient is φ = 85877923200.

The previous prime is 125238638857. The next prime is 125238638879. The reversal of 125238638875 is 578836832521.

It is not a de Polignac number, because 125238638875 - 2⁷ = 125238638747 is a prime.

It is a super-2 number, since 2×125238638875² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125238638879) 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, 71564062 + ... + 71565811.

It is an arithmetic number, because the mean of its divisors is an integer number (11164130172).

Almost surely, 2^125238638875 is an apocalyptic number.

125238638875 is a deficient number, since it is larger than the sum of its proper divisors (53387443877).

125238638875 is an equidigital number, since it uses as much as digits as its factorization.

125238638875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143129895 (or 143129885 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 125238638875 in words is "one hundred twenty-five billion, two hundred thirty-eight million, six hundred thirty-eight thousand, eight hundred seventy-five".