3911225 has 12 divisors (see below), whose sum is σ = 4901100. Its totient is φ = 3096000.

The previous prime is 3911221. The next prime is 3911227. The reversal of 3911225 is 5221193.

It can be written as a sum of positive squares in 6 ways, for example, as 18496 + 3892729 = 136^2 + 1973^2 .

It is not a de Polignac number, because 3911225 - 2² = 3911221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3911225.

It is not an unprimeable number, because it can be changed into a prime (3911221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1751 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (408425).

Almost surely, 2^3911225 is an apocalyptic number.

It is an amenable number.

3911225 is a deficient number, since it is larger than the sum of its proper divisors (989875).

3911225 is a wasteful number, since it uses less digits than its factorization.

3911225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1655 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 3911225 is about 1977.6817236350. The cubic root of 3911225 is about 157.5569626831.

The spelling of 3911225 in words is "three million, nine hundred eleven thousand, two hundred twenty-five".