634725125099 has 6 divisors (see below), whose sum is σ = 687305904876. Its totient is φ = 585900115320.

The previous prime is 634725125081. The next prime is 634725125191. The reversal of 634725125099 is 990521527436.

It is a happy number.

634725125099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634725125099 - 2⁸ = 634725124843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634725125099.

It is not an unprimeable number, because it can be changed into a prime (634725125039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1877884817 + ... + 1877885154.

It is an arithmetic number, because the mean of its divisors is an integer number (114550984146).

Almost surely, 2^634725125099 is an apocalyptic number.

634725125099 is a deficient number, since it is larger than the sum of its proper divisors (52580779777).

634725125099 is a wasteful number, since it uses less digits than its factorization.

634725125099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755769997 (or 3755769984 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 634725125099 in words is "six hundred thirty-four billion, seven hundred twenty-five million, one hundred twenty-five thousand, ninety-nine".