7225225 has 48 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 4492800.

The previous prime is 7225217. The next prime is 7225241. The reversal of 7225225 is 5225227.

It is not a de Polignac number, because 7225225 - 2³ = 7225217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a d-powerful number, because it can be written as 7⁵ + 2¹² + 2¹³ + 5³ + 2²⁰ + 2²² + 5⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 7225225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136299 + ... + 136351.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

Almost surely, 2^7225225 is an apocalyptic number.

It is an amenable number.

7225225 is a deficient number, since it is larger than the sum of its proper divisors (4024055).

7225225 is a wasteful number, since it uses less digits than its factorization.

7225225 is an evil number, because the sum of its binary digits is even.

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

The product of its digits is 2800, while the sum is 25.

The square root of 7225225 is about 2687.9778644922. The cubic root of 7225225 is about 193.3231184324.

It can be divided in two parts, 7225 and 225, that multiplied together give a square (1625625 = 1275²).

The spelling of 7225225 in words is "seven million, two hundred twenty-five thousand, two hundred twenty-five".