325642134656 has 64 divisors (see below), whose sum is σ = 663231278880. Its totient is φ = 159219591168.

The previous prime is 325642134637. The next prime is 325642134707. The reversal of 325642134656 is 656431246523.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 325642134656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036331 + ... + 1313493.

Almost surely, 2^325642134656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325642134656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331615639440).

325642134656 is an abundant number, since it is smaller than the sum of its proper divisors (337589144224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325642134656 is a wasteful number, since it uses less digits than its factorization.

325642134656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277381 (or 277369 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The spelling of 325642134656 in words is "three hundred twenty-five billion, six hundred forty-two million, one hundred thirty-four thousand, six hundred fifty-six".