64312420325 has 24 divisors (see below), whose sum is σ = 80407422792. Its totient is φ = 51024849920.

The previous prime is 64312420309. The next prime is 64312420331. The reversal of 64312420325 is 52302421346.

It can be written as a sum of positive squares in 12 ways, for example, as 44275734724 + 20036685601 = 210418^2 + 141551^2 .

It is not a de Polignac number, because 64312420325 - 2⁴ = 64312420309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64312420291 and 64312420300.

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, 3748667 + ... + 3765783.

It is an arithmetic number, because the mean of its divisors is an integer number (3350309283).

Almost surely, 2^64312420325 is an apocalyptic number.

It is an amenable number.

64312420325 is a deficient number, since it is larger than the sum of its proper divisors (16095002467).

64312420325 is a wasteful number, since it uses less digits than its factorization.

64312420325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18361 (or 18356 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 64312420325 in words is "sixty-four billion, three hundred twelve million, four hundred twenty thousand, three hundred twenty-five".