3225351221 has 4 divisors (see below), whose sum is σ = 3225465792. Its totient is φ = 3225236652.

The previous prime is 3225351179. The next prime is 3225351229. The reversal of 3225351221 is 1221535223.

It is a happy number.

3225351221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3225351221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3225351229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17396 + ... + 82178.

It is an arithmetic number, because the mean of its divisors is an integer number (806366448).

Almost surely, 2^3225351221 is an apocalyptic number.

It is an amenable number.

3225351221 is a deficient number, since it is larger than the sum of its proper divisors (114571).

3225351221 is an equidigital number, since it uses as much as digits as its factorization.

3225351221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114570.

The product of its digits is 3600, while the sum is 26.

The square root of 3225351221 is about 56792.1757022919. The cubic root of 3225351221 is about 1477.4938137993.

Adding to 3225351221 its reverse (1221535223), we get a palindrome (4446886444).

The spelling of 3225351221 in words is "three billion, two hundred twenty-five million, three hundred fifty-one thousand, two hundred twenty-one".