3172225 has 12 divisors (see below), whose sum is σ = 4495744. Its totient is φ = 2175120.

The previous prime is 3172207. The next prime is 3172237. The reversal of 3172225 is 5222713.

It is not a de Polignac number, because 3172225 - 2⁵ = 3172193 is a prime.

It is a super-2 number, since 2×3172225² = 20126022901250, which contains 22 as substring.

It is a Duffinian number.

3172225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3172196 and 3172205.

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, 8889 + ... + 9238.

Almost surely, 2^3172225 is an apocalyptic number.

3172225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3172225 is a deficient number, since it is larger than the sum of its proper divisors (1323519).

3172225 is a wasteful number, since it uses less digits than its factorization.

3172225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18144 (or 18139 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 3172225 is about 1781.0741141233. The cubic root of 3172225 is about 146.9336705396.

Adding to 3172225 its reverse (5222713), we get a palindrome (8394938).

The spelling of 3172225 in words is "three million, one hundred seventy-two thousand, two hundred twenty-five".