64675370725 has 36 divisors (see below), whose sum is σ = 94146996900. Its totient is φ = 43941864960.

The previous prime is 64675370717. The next prime is 64675370729. The reversal of 64675370725 is 52707357646.

It can be written as a sum of positive squares in 6 ways, for example, as 2567752929 + 62107617796 = 50673^2 + 249214^2 .

It is not a de Polignac number, because 64675370725 - 2³ = 64675370717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64675370729) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 108660 + ... + 375709.

Almost surely, 2^64675370725 is an apocalyptic number.

It is an amenable number.

64675370725 is a deficient number, since it is larger than the sum of its proper divisors (29471626175).

64675370725 is a wasteful number, since it uses less digits than its factorization.

64675370725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484502 (or 484490 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 52.

The spelling of 64675370725 in words is "sixty-four billion, six hundred seventy-five million, three hundred seventy thousand, seven hundred twenty-five".