3420225 has 36 divisors (see below), whose sum is σ = 6364176. Its totient is φ = 1820880.

The previous prime is 3420211. The next prime is 3420227. The reversal of 3420225 is 5220243.

It is not a de Polignac number, because 3420225 - 2⁶ = 3420161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3420198 and 3420207.

It is not an unprimeable number, because it can be changed into a prime (3420227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5794 + ... + 6356.

Almost surely, 2^3420225 is an apocalyptic number.

It is an amenable number.

3420225 is a deficient number, since it is larger than the sum of its proper divisors (2943951).

3420225 is an equidigital number, since it uses as much as digits as its factorization.

3420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3420225 is about 1849.3850329231. The cubic root of 3420225 is about 150.6670294150.

Adding to 3420225 its sum of digits (18), we get a palindrome (3420243).

Adding to 3420225 its reverse (5220243), we get a palindrome (8640468).

The spelling of 3420225 in words is "three million, four hundred twenty thousand, two hundred twenty-five".