6688340025 has 48 divisors (see below), whose sum is σ = 11175504960. Its totient is φ = 3529440000.

The previous prime is 6688339991. The next prime is 6688340047. The reversal of 6688340025 is 5200438866.

It is not a de Polignac number, because 6688340025 - 2¹³ = 6688331833 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2970150 + ... + 2972400.

It is an arithmetic number, because the mean of its divisors is an integer number (232823020).

Almost surely, 2^6688340025 is an apocalyptic number.

It is an amenable number.

6688340025 is a deficient number, since it is larger than the sum of its proper divisors (4487164935).

6688340025 is a wasteful number, since it uses less digits than its factorization.

6688340025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 6688340025 is about 81782.2720704188. The cubic root of 6688340025 is about 1884.1093926659.

The spelling of 6688340025 in words is "six billion, six hundred eighty-eight million, three hundred forty thousand, twenty-five".