325665566523 has 48 divisors (see below), whose sum is σ = 530433472800. Its totient is φ = 197329176000.

The previous prime is 325665566489. The next prime is 325665566533.

325665566523 is a `hidden beast` number, since 3 + 2 + 5 + 6 + 6 + 55 + 66 + 523 = 666.

325665566523 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 325665566523 - 2⁸ = 325665566267 is a prime.

It is a super-2 number, since 2×325665566523² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 325665566523.

It is not an unprimeable number, because it can be changed into a prime (325665566533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20472873 + ... + 20488773.

It is an arithmetic number, because the mean of its divisors is an integer number (11050697350).

Almost surely, 2^325665566523 is an apocalyptic number.

325665566523 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

325665566523 is a deficient number, since it is larger than the sum of its proper divisors (204767906277).

325665566523 is a wasteful number, since it uses less digits than its factorization.

325665566523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22201 (or 22184 counting only the distinct ones).

The product of its digits is 29160000, while the sum is 54.

The spelling of 325665566523 in words is "three hundred twenty-five billion, six hundred sixty-five million, five hundred sixty-six thousand, five hundred twenty-three".