6681425 has 24 divisors (see below), whose sum is σ = 8928000. Its totient is φ = 4942080.

The previous prime is 6681421. The next prime is 6681427. The reversal of 6681425 is 5241866.

It is not a de Polignac number, because 6681425 - 2² = 6681421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6681391 and 6681400.

It is not an unprimeable number, because it can be changed into a prime (6681421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33476 + ... + 33674.

It is an arithmetic number, because the mean of its divisors is an integer number (372000).

Almost surely, 2^6681425 is an apocalyptic number.

It is an amenable number.

6681425 is a deficient number, since it is larger than the sum of its proper divisors (2246575).

6681425 is a wasteful number, since it uses less digits than its factorization.

6681425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 300 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 6681425 is about 2584.8452564902. The cubic root of 6681425 is about 188.3459846532.

The spelling of 6681425 in words is "six million, six hundred eighty-one thousand, four hundred twenty-five".