64813277625 has 16 divisors (see below), whose sum is σ = 107849294592. Its totient is φ = 34567081200.

The previous prime is 64813277587. The next prime is 64813277657. The reversal of 64813277625 is 52677231846.

It is a happy number.

64813277625 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 64813277625 - 2¹¹ = 64813275577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86417329 + ... + 86418078.

It is an arithmetic number, because the mean of its divisors is an integer number (6740580912).

Almost surely, 2^64813277625 is an apocalyptic number.

It is an amenable number.

64813277625 is a deficient number, since it is larger than the sum of its proper divisors (43036016967).

64813277625 is a wasteful number, since it uses less digits than its factorization.

64813277625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172835425 (or 172835415 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 51.

The spelling of 64813277625 in words is "sixty-four billion, eight hundred thirteen million, two hundred seventy-seven thousand, six hundred twenty-five".