7320825 has 18 divisors (see below), whose sum is σ = 13112814. Its totient is φ = 3904320.

The previous prime is 7320823. The next prime is 7320827. The reversal of 7320825 is 5280237.

It is an interprime number because it is at equal distance from previous prime (7320823) and next prime (7320827).

It can be written as a sum of positive squares in 3 ways, for example, as 95481 + 7225344 = 309^2 + 2688^2 .

It is not a de Polignac number, because 7320825 - 2¹ = 7320823 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7320821) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16044 + ... + 16493.

Almost surely, 2^7320825 is an apocalyptic number.

7320825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7320825 is a deficient number, since it is larger than the sum of its proper divisors (5791989).

7320825 is a wasteful number, since it uses less digits than its factorization.

7320825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32553 (or 32545 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 7320825 is about 2705.7023117852. The cubic root of 7320825 is about 194.1720318369.

The spelling of 7320825 in words is "seven million, three hundred twenty thousand, eight hundred twenty-five".