3910221225 has 18 divisors (see below), whose sum is σ = 7003641086. Its totient is φ = 2085451200.

The previous prime is 3910221199. The next prime is 3910221229. The reversal of 3910221225 is 5221220193.

It is a happy number.

3910221225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 927750681 + 2982470544 = 30459^2 + 54612^2 .

It is not a de Polignac number, because 3910221225 - 2¹¹ = 3910219177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3910221229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8689156 + ... + 8689605.

Almost surely, 2^3910221225 is an apocalyptic number.

It is an amenable number.

3910221225 is a deficient number, since it is larger than the sum of its proper divisors (3093419861).

3910221225 is a wasteful number, since it uses less digits than its factorization.

3910221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17378777 (or 17378769 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3910221225 is about 62531.7617295403. The cubic root of 3910221225 is about 1575.4348308088.

The spelling of 3910221225 in words is "three billion, nine hundred ten million, two hundred twenty-one thousand, two hundred twenty-five".