3216225 has 48 divisors (see below), whose sum is σ = 5842880. Its totient is φ = 1555200.

The previous prime is 3216221. The next prime is 3216233. The reversal of 3216225 is 5226123.

3216225 = 98² + 99² + ... + 219².

It is not a de Polignac number, because 3216225 - 2² = 3216221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3216221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52695 + ... + 52755.

Almost surely, 2^3216225 is an apocalyptic number.

It is an amenable number.

3216225 is a deficient number, since it is larger than the sum of its proper divisors (2626655).

3216225 is a wasteful number, since it uses less digits than its factorization.

3216225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 125 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 3216225 is about 1793.3836733951. The cubic root of 3216225 is about 147.6098960764.

The spelling of 3216225 in words is "three million, two hundred sixteen thousand, two hundred twenty-five".