325105807644 has 36 divisors (see below), whose sum is σ = 835267294680. Its totient is φ = 106592067360.

The previous prime is 325105807643. The next prime is 325105807651. The reversal of 325105807644 is 446708501523.

325105807644 is a `hidden beast` number, since 3 + 2 + 5 + 1 + 0 + 580 + 7 + 64 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 325105807644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325105807643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74020074 + ... + 74024465.

Almost surely, 2^325105807644 is an apocalyptic number.

It is an amenable number.

325105807644 is an abundant number, since it is smaller than the sum of its proper divisors (510161487036).

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

325105807644 is a wasteful number, since it uses less digits than its factorization.

325105807644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148044610 (or 148044605 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 325105807644 in words is "three hundred twenty-five billion, one hundred five million, eight hundred seven thousand, six hundred forty-four".