325115221 has 2 divisors, whose sum is σ = 325115222. Its totient is φ = 325115220.

The previous prime is 325115183. The next prime is 325115227. The reversal of 325115221 is 122511523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262926225 + 62188996 = 16215^2 + 7886^2 .

It is an emirp because it is prime and its reverse (122511523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325115221 - 2⁷ = 325115093 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 325115192 and 325115201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325115227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162557610 + 162557611.

It is an arithmetic number, because the mean of its divisors is an integer number (162557611).

Almost surely, 2^325115221 is an apocalyptic number.

It is an amenable number.

325115221 is a deficient number, since it is larger than the sum of its proper divisors (1).

325115221 is an equidigital number, since it uses as much as digits as its factorization.

325115221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 325115221 is about 18030.9517496997. The cubic root of 325115221 is about 687.6156735834.

Adding to 325115221 its reverse (122511523), we get a palindrome (447626744).

It can be divided in two parts, 32511522 and 1, that added together give a palindrome (32511523).

The spelling of 325115221 in words is "three hundred twenty-five million, one hundred fifteen thousand, two hundred twenty-one".