320326316554025 has 6 divisors (see below), whose sum is σ = 397204632527022. Its totient is φ = 256261053243200.

The previous prime is 320326316553973. The next prime is 320326316554033. The reversal of 320326316554025 is 520455613623023.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 275361513001 + 320050955041024 = 524749^2 + 17889968^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320326316554025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6406526331056 + ... + 6406526331105.

It is an arithmetic number, because the mean of its divisors is an integer number (66200772087837).

Almost surely, 2^{320326316554025} is an apocalyptic number.

It is an amenable number.

320326316554025 is a deficient number, since it is larger than the sum of its proper divisors (76878315972997).

320326316554025 is a wasteful number, since it uses less digits than its factorization.

320326316554025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12813052662171 (or 12813052662166 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 320326316554025 in words is "three hundred twenty trillion, three hundred twenty-six billion, three hundred sixteen million, five hundred fifty-four thousand, twenty-five".