320425204165 has 16 divisors (see below), whose sum is σ = 419965741440. Its totient is φ = 232758723520.

The previous prime is 320425204133. The next prime is 320425204181. The reversal of 320425204165 is 561402524023.

It is not a de Polignac number, because 320425204165 - 2⁵ = 320425204133 is a prime.

It is a super-2 number, since 2×320425204165² (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 320425204165.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3425794 + ... + 3518083.

It is an arithmetic number, because the mean of its divisors is an integer number (26247858840).

Almost surely, 2^320425204165 is an apocalyptic number.

It is an amenable number.

320425204165 is a deficient number, since it is larger than the sum of its proper divisors (99540537275).

320425204165 is a wasteful number, since it uses less digits than its factorization.

320425204165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944732.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 320425204165 its reverse (561402524023), we get a palindrome (881827728188).

The spelling of 320425204165 in words is "three hundred twenty billion, four hundred twenty-five million, two hundred four thousand, one hundred sixty-five".