125125138887 has 24 divisors (see below), whose sum is σ = 194203022832. Its totient is φ = 71451676800.

The previous prime is 125125138871. The next prime is 125125138903. The reversal of 125125138887 is 788831521521.

It is an interprime number because it is at equal distance from previous prime (125125138871) and next prime (125125138903).

It is not a de Polignac number, because 125125138887 - 2⁴ = 125125138871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125120138887) 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, 69664 + ... + 505077.

It is an arithmetic number, because the mean of its divisors is an integer number (8091792618).

Almost surely, 2^125125138887 is an apocalyptic number.

125125138887 is a deficient number, since it is larger than the sum of its proper divisors (69077883945).

125125138887 is a wasteful number, since it uses less digits than its factorization.

125125138887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576239 (or 576232 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 51.

The spelling of 125125138887 in words is "one hundred twenty-five billion, one hundred twenty-five million, one hundred thirty-eight thousand, eight hundred eighty-seven".