64464252625 has 16 divisors (see below), whose sum is σ = 80549269632. Its totient is φ = 51508657200.

The previous prime is 64464252623. The next prime is 64464252649. The reversal of 64464252625 is 52625246446.

It is not a de Polignac number, because 64464252625 - 2¹ = 64464252623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64464252623) 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 15 ways as a sum of consecutive naturals, for example, 210439 + ... + 416188.

It is an arithmetic number, because the mean of its divisors is an integer number (5034329352).

Almost surely, 2^64464252625 is an apocalyptic number.

It is an amenable number.

64464252625 is a deficient number, since it is larger than the sum of its proper divisors (16085017007).

64464252625 is an equidigital number, since it uses as much as digits as its factorization.

64464252625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627465 (or 627455 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 46.

The spelling of 64464252625 in words is "sixty-four billion, four hundred sixty-four million, two hundred fifty-two thousand, six hundred twenty-five".