7223225 has 6 divisors (see below), whose sum is σ = 8956830. Its totient is φ = 5778560.

The previous prime is 7223221. The next prime is 7223239. The reversal of 7223225 is 5223227.

It can be written as a sum of positive squares in 3 ways, for example, as 1951609 + 5271616 = 1397^2 + 2296^2 .

It is not a de Polignac number, because 7223225 - 2² = 7223221 is a prime.

It is a d-powerful number, because it can be written as 7⁴ + 2¹³ + 2¹⁴ + 3⁵ + 2²⁰ + 2²² + 5⁹ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7223225.

It is not an unprimeable number, because it can be changed into a prime (7223221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144440 + ... + 144489.

It is an arithmetic number, because the mean of its divisors is an integer number (1492805).

Almost surely, 2^7223225 is an apocalyptic number.

It is an amenable number.

7223225 is a deficient number, since it is larger than the sum of its proper divisors (1733605).

7223225 is a wasteful number, since it uses less digits than its factorization.

7223225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288939 (or 288934 counting only the distinct ones).

The product of its digits is 1680, while the sum is 23.

The square root of 7223225 is about 2687.6058118705. The cubic root of 7223225 is about 193.3052789918.

The spelling of 7223225 in words is "seven million, two hundred twenty-three thousand, two hundred twenty-five".