64427897325 has 24 divisors (see below), whose sum is σ = 116204499936. Its totient is φ = 31237768000.

The previous prime is 64427897323. The next prime is 64427897333. The reversal of 64427897325 is 52379872446.

64427897325 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 64427897325 - 2¹ = 64427897323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64427897323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39046386 + ... + 39048035.

It is an arithmetic number, because the mean of its divisors is an integer number (4841854164).

Almost surely, 2^64427897325 is an apocalyptic number.

It is an amenable number.

64427897325 is a deficient number, since it is larger than the sum of its proper divisors (51776602611).

64427897325 is a wasteful number, since it uses less digits than its factorization.

64427897325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78094445 (or 78094440 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 57.

The spelling of 64427897325 in words is "sixty-four billion, four hundred twenty-seven million, eight hundred ninety-seven thousand, three hundred twenty-five".