325566616620 has 192 divisors, whose sum is σ = 1052649271296. Its totient is φ = 73642694400.

The previous prime is 325566616607. The next prime is 325566616621. The reversal of 325566616620 is 26616665523.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 325566616620.

It is not an unprimeable number, because it can be changed into a prime (325566616621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50464395 + ... + 50470845.

It is an arithmetic number, because the mean of its divisors is an integer number (5482548288).

Almost surely, 2^325566616620 is an apocalyptic number.

325566616620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325566616620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526324635648).

325566616620 is an abundant number, since it is smaller than the sum of its proper divisors (727082654676).

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

325566616620 is a wasteful number, since it uses less digits than its factorization.

325566616620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700 (or 7698 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 325566616620 in words is "three hundred twenty-five billion, five hundred sixty-six million, six hundred sixteen thousand, six hundred twenty".