331220325 has 24 divisors (see below), whose sum is σ = 555339456. Its totient is φ = 174160000.

The previous prime is 331220311. The next prime is 331220341. The reversal of 331220325 is 523022133.

It is not a de Polignac number, because 331220325 - 2⁶ = 331220261 is a prime.

It is a Curzon number.

It is a congruent number.

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, 25776 + ... + 36425.

It is an arithmetic number, because the mean of its divisors is an integer number (23139144).

Almost surely, 2^331220325 is an apocalyptic number.

It is an amenable number.

331220325 is a deficient number, since it is larger than the sum of its proper divisors (224119131).

331220325 is a wasteful number, since it uses less digits than its factorization.

331220325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62285 (or 62280 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 331220325 is about 18199.4594699953. The cubic root of 331220325 is about 691.8930895291.

Adding to 331220325 its reverse (523022133), we get a palindrome (854242458).

The spelling of 331220325 in words is "three hundred thirty-one million, two hundred twenty thousand, three hundred twenty-five".