321004025 has 12 divisors (see below), whose sum is σ = 398364012. Its totient is φ = 256597440.

The previous prime is 321003997. The next prime is 321004063. The reversal of 321004025 is 520400123.

It can be written as a sum of positive squares in 6 ways, for example, as 88868329 + 232135696 = 9427^2 + 15236^2 .

It is not a de Polignac number, because 321004025 - 2⁸ = 321003769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321003994 and 321004012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31907 + ... + 40743.

It is an arithmetic number, because the mean of its divisors is an integer number (33197001).

Almost surely, 2^321004025 is an apocalyptic number.

It is an amenable number.

321004025 is a deficient number, since it is larger than the sum of its proper divisors (77359987).

321004025 is a wasteful number, since it uses less digits than its factorization.

321004025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10300 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 321004025 is about 17916.5851936132. The cubic root of 321004025 is about 684.7049895584.

Adding to 321004025 its reverse (520400123), we get a palindrome (841404148).

The spelling of 321004025 in words is "three hundred twenty-one million, four thousand, twenty-five".