6816725 has 24 divisors (see below), whose sum is σ = 9047040. Its totient is φ = 5080320.

The previous prime is 6816721. The next prime is 6816731. The reversal of 6816725 is 5276186.

It is not a de Polignac number, because 6816725 - 2² = 6816721 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53612 + ... + 53738.

It is an arithmetic number, because the mean of its divisors is an integer number (376960).

Almost surely, 2^6816725 is an apocalyptic number.

It is an amenable number.

6816725 is a deficient number, since it is larger than the sum of its proper divisors (2230315).

6816725 is a wasteful number, since it uses less digits than its factorization.

6816725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 6816725 is about 2610.8858649891. The cubic root of 6816725 is about 189.6088443980.

The spelling of 6816725 in words is "six million, eight hundred sixteen thousand, seven hundred twenty-five".