640425276375 has 32 divisors (see below), whose sum is σ = 1069913505024. Its totient is φ = 340199300000.

The previous prime is 640425276353. The next prime is 640425276457. The reversal of 640425276375 is 573672524046.

640425276375 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 640425276375 - 2⁷ = 640425276247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3307869 + ... + 3496118.

It is an arithmetic number, because the mean of its divisors is an integer number (33434797032).

Almost surely, 2^640425276375 is an apocalyptic number.

640425276375 is a deficient number, since it is larger than the sum of its proper divisors (429488228649).

640425276375 is a wasteful number, since it uses less digits than its factorization.

640425276375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804256 (or 6804246 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 640425276375 in words is "six hundred forty billion, four hundred twenty-five million, two hundred seventy-six thousand, three hundred seventy-five".