7117225 has 6 divisors (see below), whose sum is σ = 8825390. Its totient is φ = 5693760.

The previous prime is 7117199. The next prime is 7117277. The reversal of 7117225 is 5227117.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 258064 + 6859161 = 508^2 + 2619^2 .

It is not a de Polignac number, because 7117225 - 2⁵ = 7117193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 284689 = 7117225 / (7 + 1 + 1 + 7 + 2 + 2 + 5).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7117225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142320 + ... + 142369.

Almost surely, 2^7117225 is an apocalyptic number.

It is an amenable number.

7117225 is a deficient number, since it is larger than the sum of its proper divisors (1708165).

7117225 is a wasteful number, since it uses less digits than its factorization.

7117225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284699 (or 284694 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 7117225 is about 2667.8127745402. The cubic root of 7117225 is about 192.3550378812.

The spelling of 7117225 in words is "seven million, one hundred seventeen thousand, two hundred twenty-five".