3225543221 has 2 divisors, whose sum is σ = 3225543222. Its totient is φ = 3225543220.

The previous prime is 3225543203. The next prime is 3225543287. The reversal of 3225543221 is 1223455223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3179832100 + 45711121 = 56390^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 3225543221 - 2¹⁸ = 3225281077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3225543121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612771610 + 1612771611.

It is an arithmetic number, because the mean of its divisors is an integer number (1612771611).

Almost surely, 2^3225543221 is an apocalyptic number.

It is an amenable number.

3225543221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3225543221 is an equidigital number, since it uses as much as digits as its factorization.

3225543221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 29.

The square root of 3225543221 is about 56793.8660508333. The cubic root of 3225543221 is about 1477.5231308321.

Adding to 3225543221 its reverse (1223455223), we get a palindrome (4448998444).

The spelling of 3225543221 in words is "three billion, two hundred twenty-five million, five hundred forty-three thousand, two hundred twenty-one".