125138596191 has 16 divisors (see below), whose sum is σ = 191017883904. Its totient is φ = 71383832064.

The previous prime is 125138596153. The next prime is 125138596277. The reversal of 125138596191 is 191695831521.

It is a happy number.

It is not a de Polignac number, because 125138596191 - 2⁹ = 125138595679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125138596151) 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, 5151645 + ... + 5175878.

It is an arithmetic number, because the mean of its divisors is an integer number (11938617744).

Almost surely, 2^125138596191 is an apocalyptic number.

125138596191 is a deficient number, since it is larger than the sum of its proper divisors (65879287713).

125138596191 is a wasteful number, since it uses less digits than its factorization.

125138596191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10328110.

The product of its digits is 583200, while the sum is 51.

The spelling of 125138596191 in words is "one hundred twenty-five billion, one hundred thirty-eight million, five hundred ninety-six thousand, one hundred ninety-one".