125039195931 has 12 divisors (see below), whose sum is σ = 180529964088. Its totient is φ = 76947197184.

The previous prime is 125039195887. The next prime is 125039195951. The reversal of 125039195931 is 139591930521.

It is not a de Polignac number, because 125039195931 - 2¹⁷ = 125039064859 is a prime.

It is a super-4 number, since 4×125039195931⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (125039195951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123312310 + ... + 123313323.

It is an arithmetic number, because the mean of its divisors is an integer number (15044163674).

Almost surely, 2^125039195931 is an apocalyptic number.

125039195931 is a deficient number, since it is larger than the sum of its proper divisors (55490768157).

125039195931 is a wasteful number, since it uses less digits than its factorization.

125039195931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246625662 (or 246625649 counting only the distinct ones).

The product of its (nonzero) digits is 328050, while the sum is 48.

The spelling of 125039195931 in words is "one hundred twenty-five billion, thirty-nine million, one hundred ninety-five thousand, nine hundred thirty-one".