64763511725 has 24 divisors (see below), whose sum is σ = 87620052672. Its totient is φ = 47093916800.

The previous prime is 64763511667. The next prime is 64763511749. The reversal of 64763511725 is 52711536746.

64763511725 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 64763511725 - 2⁸ = 64763511469 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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 64763511725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2634089 + ... + 2658561.

It is an arithmetic number, because the mean of its divisors is an integer number (3650835528).

Almost surely, 2^64763511725 is an apocalyptic number.

It is an amenable number.

64763511725 is a deficient number, since it is larger than the sum of its proper divisors (22856540947).

64763511725 is a wasteful number, since it uses less digits than its factorization.

64763511725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34117 (or 34112 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The spelling of 64763511725 in words is "sixty-four billion, seven hundred sixty-three million, five hundred eleven thousand, seven hundred twenty-five".