7312225 has 6 divisors (see below), whose sum is σ = 9067190. Its totient is φ = 5849760.

The previous prime is 7312177. The next prime is 7312231. The reversal of 7312225 is 5222137.

It can be written as a sum of positive squares in 3 ways, for example, as 38416 + 7273809 = 196^2 + 2697^2 .

It is not a de Polignac number, because 7312225 - 2¹⁵ = 7279457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7312196 and 7312205.

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 5 ways as a sum of consecutive naturals, for example, 146220 + ... + 146269.

Almost surely, 2^7312225 is an apocalyptic number.

It is an amenable number.

7312225 is a deficient number, since it is larger than the sum of its proper divisors (1754965).

7312225 is a wasteful number, since it uses less digits than its factorization.

7312225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292499 (or 292494 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 7312225 is about 2704.1126086019. The cubic root of 7312225 is about 194.0959687435.

The spelling of 7312225 in words is "seven million, three hundred twelve thousand, two hundred twenty-five".