6390825 has 72 divisors (see below), whose sum is σ = 12892032. Its totient is φ = 2782080.

The previous prime is 6390799. The next prime is 6390829. The reversal of 6390825 is 5280936.

It is a happy number.

It is not a de Polignac number, because 6390825 - 2⁷ = 6390697 is a prime.

6390825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6390829) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 135952 + ... + 135998.

It is an arithmetic number, because the mean of its divisors is an integer number (179056).

Almost surely, 2^6390825 is an apocalyptic number.

It is an amenable number.

6390825 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

6390825 is a wasteful number, since it uses less digits than its factorization.

6390825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 6390825 is about 2528.0081091642. The cubic root of 6390825 is about 185.5747888770.

The spelling of 6390825 in words is "six million, three hundred ninety thousand, eight hundred twenty-five".