4172225 has 12 divisors (see below), whose sum is σ = 5478444. Its totient is φ = 3141120.

The previous prime is 4172183. The next prime is 4172239. The reversal of 4172225 is 5222714.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 512656 + 3659569 = 716^2 + 1913^2 .

It is not a de Polignac number, because 4172225 - 2¹⁰ = 4171201 is a prime.

It is a super-2 number, since 2×4172225² = 34814922901250, which contains 22 as substring.

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 4172225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4484 + ... + 5333.

It is an arithmetic number, because the mean of its divisors is an integer number (456537).

Almost surely, 2^4172225 is an apocalyptic number.

It is an amenable number.

4172225 is a deficient number, since it is larger than the sum of its proper divisors (1306219).

4172225 is a wasteful number, since it uses less digits than its factorization.

4172225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844 (or 9839 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 4172225 is about 2042.6025066077. The cubic root of 4172225 is about 160.9864191314.

Adding to 4172225 its reverse (5222714), we get a palindrome (9394939).

It can be divided in two parts, 4 and 172225, that multiplied together give a square (688900 = 830²).

The spelling of 4172225 in words is "four million, one hundred seventy-two thousand, two hundred twenty-five".