6650825 has 12 divisors (see below), whose sum is σ = 8732700. Its totient is φ = 5007360.

The previous prime is 6650821. The next prime is 6650827. The reversal of 6650825 is 5280566.

6650825 = 260² + 261² + ... + 334².

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 204304 + 6446521 = 452^2 + 2539^2 .

It is not a de Polignac number, because 6650825 - 2² = 6650821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6650791 and 6650800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7400 + ... + 8249.

It is an arithmetic number, because the mean of its divisors is an integer number (727725).

Almost surely, 2^6650825 is an apocalyptic number.

It is an amenable number.

6650825 is a deficient number, since it is larger than the sum of its proper divisors (2081875).

6650825 is a wasteful number, since it uses less digits than its factorization.

6650825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676 (or 15671 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 6650825 is about 2578.9193473236. The cubic root of 6650825 is about 188.0580117487.

The spelling of 6650825 in words is "six million, six hundred fifty thousand, eight hundred twenty-five".