3931225 has 12 divisors (see below), whose sum is σ = 4949584. Its totient is φ = 3096720.

The previous prime is 3931177. The next prime is 3931231. The reversal of 3931225 is 5221393.

It is a happy number.

It is not a de Polignac number, because 3931225 - 2¹⁹ = 3406937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3931225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502 + ... + 2848.

Almost surely, 2^3931225 is an apocalyptic number.

It is an amenable number.

3931225 is a deficient number, since it is larger than the sum of its proper divisors (1018359).

3931225 is a wasteful number, since it uses less digits than its factorization.

3931225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2419 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 3931225 is about 1982.7317014664. The cubic root of 3931225 is about 157.8250614123.

The spelling of 3931225 in words is "three million, nine hundred thirty-one thousand, two hundred twenty-five".