125873491686 has 36 divisors (see below), whose sum is σ = 253217236428. Its totient is φ = 41714208000.

The previous prime is 125873491633. The next prime is 125873491703. The reversal of 125873491686 is 686194378521.

It is a happy number.

It is a super-2 number, since 2×125873491686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 209439786 + ... + 209440386.

It is an arithmetic number, because the mean of its divisors is an integer number (7033812123).

Almost surely, 2^125873491686 is an apocalyptic number.

125873491686 is an abundant number, since it is smaller than the sum of its proper divisors (127343744742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125873491686 is an frugal number, since it uses more digits than its factorization.

125873491686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 847 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 125873491686 in words is "one hundred twenty-five billion, eight hundred seventy-three million, four hundred ninety-one thousand, six hundred eighty-six".