7215325 has 18 divisors (see below), whose sum is σ = 9700334. Its totient is φ = 5292480.

The previous prime is 7215323. The next prime is 7215347. The reversal of 7215325 is 5235127.

It can be written as a sum of positive squares in 9 ways, for example, as 6095961 + 1119364 = 2469^2 + 1058^2 .

It is not a de Polignac number, because 7215325 - 2¹ = 7215323 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7215325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215323) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 48351 + ... + 48499.

Almost surely, 2^7215325 is an apocalyptic number.

It is an amenable number.

7215325 is a deficient number, since it is larger than the sum of its proper divisors (2485009).

7215325 is a wasteful number, since it uses less digits than its factorization.

7215325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 167 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 7215325 is about 2686.1357002207. The cubic root of 7215325 is about 193.2347809906.

The spelling of 7215325 in words is "seven million, two hundred fifteen thousand, three hundred twenty-five".