642464122325 has 48 divisors (see below), whose sum is σ = 842075121600. Its totient is φ = 484897881600.

The previous prime is 642464122309. The next prime is 642464122357. The reversal of 642464122325 is 523221464246.

642464122325 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 642464122325 - 2⁴ = 642464122309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128413274 + ... + 128418276.

It is an arithmetic number, because the mean of its divisors is an integer number (17543231700).

Almost surely, 2^642464122325 is an apocalyptic number.

It is an amenable number.

642464122325 is a deficient number, since it is larger than the sum of its proper divisors (199610999275).

642464122325 is a wasteful number, since it uses less digits than its factorization.

642464122325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102 (or 6097 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The spelling of 642464122325 in words is "six hundred forty-two billion, four hundred sixty-four million, one hundred twenty-two thousand, three hundred twenty-five".