125321803686 has 12 divisors (see below), whose sum is σ = 271530574692. Its totient is φ = 41773934556.

The previous prime is 125321803669. The next prime is 125321803697. The reversal of 125321803686 is 686308123521.

125321803686 is a `hidden beast` number, since 1 + 2 + 532 + 1 + 8 + 0 + 36 + 86 = 666.

It is a super-2 number, since 2×125321803686² (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 5 ways as a sum of consecutive naturals, for example, 3481161196 + ... + 3481161231.

It is an arithmetic number, because the mean of its divisors is an integer number (22627547891).

Almost surely, 2^125321803686 is an apocalyptic number.

125321803686 is an abundant number, since it is smaller than the sum of its proper divisors (146208771006).

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

125321803686 is a wasteful number, since it uses less digits than its factorization.

125321803686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962322435 (or 6962322432 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 125321803686 in words is "one hundred twenty-five billion, three hundred twenty-one million, eight hundred three thousand, six hundred eighty-six".