3255663221 has 16 divisors (see below), whose sum is σ = 3401006400. Its totient is φ = 3116342320.

The previous prime is 3255663199. The next prime is 3255663241. The reversal of 3255663221 is 1223665523.

3255663221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3255663221 - 2¹⁴ = 3255646837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3255663241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3194450 + ... + 3195468.

It is an arithmetic number, because the mean of its divisors is an integer number (212562900).

Almost surely, 2^3255663221 is an apocalyptic number.

It is an amenable number.

3255663221 is a deficient number, since it is larger than the sum of its proper divisors (145343179).

3255663221 is an equidigital number, since it uses as much as digits as its factorization.

3255663221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1179 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 3255663221 is about 57058.4193699755. The cubic root of 3255663221 is about 1482.1079077630.

The spelling of 3255663221 in words is "three billion, two hundred fifty-five million, six hundred sixty-three thousand, two hundred twenty-one".