7321825 has 36 divisors (see below), whose sum is σ = 10884720. Its totient is φ = 4868640.

The previous prime is 7321813. The next prime is 7321829. The reversal of 7321825 is 5281237.

It is not a de Polignac number, because 7321825 - 2⁷ = 7321697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7321793 and 7321802.

It is not an unprimeable number, because it can be changed into a prime (7321829) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52606 + ... + 52744.

Almost surely, 2^7321825 is an apocalyptic number.

It is an amenable number.

7321825 is a deficient number, since it is larger than the sum of its proper divisors (3562895).

7321825 is a wasteful number, since it uses less digits than its factorization.

7321825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 194 counting only the distinct ones).

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

The square root of 7321825 is about 2705.8871003795. The cubic root of 7321825 is about 194.1808725159.

The spelling of 7321825 in words is "seven million, three hundred twenty-one thousand, eight hundred twenty-five".