7318225 has 12 divisors (see below), whose sum is σ = 9126400. Its totient is φ = 5821200.

The previous prime is 7318189. The next prime is 7318247. The reversal of 7318225 is 5228137.

It is not a de Polignac number, because 7318225 - 2¹³ = 7310033 is a prime.

Its product of digits (3360) is a multiple of the sum of its prime factors (1680).

It is a junction number, because it is equal to n+sod(n) for n = 7318193 and 7318202.

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, 4240 + ... + 5710.

Almost surely, 2^7318225 is an apocalyptic number.

It is an amenable number.

7318225 is a deficient number, since it is larger than the sum of its proper divisors (1808175).

7318225 is a wasteful number, since it uses less digits than its factorization.

7318225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 1675 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 7318225 is about 2705.2218023667. The cubic root of 7318225 is about 194.1490423032.

The spelling of 7318225 in words is "seven million, three hundred eighteen thousand, two hundred twenty-five".