321321025452 has 72 divisors (see below), whose sum is σ = 874049687280. Its totient is φ = 91606784640.

The previous prime is 321321025433. The next prime is 321321025463. The reversal of 321321025452 is 254520123123.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321627 + ... + 863762.

It is an arithmetic number, because the mean of its divisors is an integer number (12139578990).

Almost surely, 2^321321025452 is an apocalyptic number.

It is an amenable number.

321321025452 is an abundant number, since it is smaller than the sum of its proper divisors (552728661828).

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

321321025452 is a wasteful number, since it uses less digits than its factorization.

321321025452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185871 (or 1185862 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 321321025452 its reverse (254520123123), we get a palindrome (575841148575).

The spelling of 321321025452 in words is "three hundred twenty-one billion, three hundred twenty-one million, twenty-five thousand, four hundred fifty-two".