325968221 has 2 divisors, whose sum is σ = 325968222. Its totient is φ = 325968220.

The previous prime is 325968211. The next prime is 325968229. The reversal of 325968221 is 122869523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243703321 + 82264900 = 15611^2 + 9070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325968221 is a prime.

It is a super-2 number, since 2×325968221² = 212510562203809682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325968229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162984110 + 162984111.

It is an arithmetic number, because the mean of its divisors is an integer number (162984111).

Almost surely, 2^325968221 is an apocalyptic number.

It is an amenable number.

325968221 is a deficient number, since it is larger than the sum of its proper divisors (1).

325968221 is an equidigital number, since it uses as much as digits as its factorization.

325968221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 325968221 is about 18054.5900258078. The cubic root of 325968221 is about 688.2165107800.

The spelling of 325968221 in words is "three hundred twenty-five million, nine hundred sixty-eight thousand, two hundred twenty-one".