664365707325 has 288 divisors, whose sum is σ = 1362231561600. Its totient is φ = 307465666560.

The previous prime is 664365707323. The next prime is 664365707333. The reversal of 664365707325 is 523707563466.

664365707325 is a `hidden beast` number, since 6 + 6 + 4 + 36 + 570 + 7 + 32 + 5 = 666.

It is not a de Polignac number, because 664365707325 - 2¹ = 664365707323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664365707323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 527692546 + ... + 527693804.

It is an arithmetic number, because the mean of its divisors is an integer number (4729970700).

Almost surely, 2^664365707325 is an apocalyptic number.

It is an amenable number.

664365707325 is an abundant number, since it is smaller than the sum of its proper divisors (697865854275).

664365707325 is a wasteful number, since it uses less digits than its factorization.

664365707325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 54.

The spelling of 664365707325 in words is "six hundred sixty-four billion, three hundred sixty-five million, seven hundred seven thousand, three hundred twenty-five".