125087685406 has 32 divisors (see below), whose sum is σ = 196774963200. Its totient is φ = 59563576800.

The previous prime is 125087685389. The next prime is 125087685433. The reversal of 125087685406 is 604586780521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2381920 + ... + 2433868.

It is an arithmetic number, because the mean of its divisors is an integer number (6149217600).

Almost surely, 2^125087685406 is an apocalyptic number.

125087685406 is a deficient number, since it is larger than the sum of its proper divisors (71687277794).

125087685406 is a wasteful number, since it uses less digits than its factorization.

125087685406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52600.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 125087685406 in words is "one hundred twenty-five billion, eighty-seven million, six hundred eighty-five thousand, four hundred six".