6778504625 has 16 divisors (see below), whose sum is σ = 8462638080. Its totient is φ = 5420839600.

The previous prime is 6778504583. The next prime is 6778504633. The reversal of 6778504625 is 5264058776.

It is not a de Polignac number, because 6778504625 - 2⁶ = 6778504561 is a prime.

It is a super-2 number, since 2×6778504625² = 91896249902292781250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407216 + ... + 423534.

It is an arithmetic number, because the mean of its divisors is an integer number (528914880).

Almost surely, 2^6778504625 is an apocalyptic number.

It is an amenable number.

6778504625 is a deficient number, since it is larger than the sum of its proper divisors (1684133455).

6778504625 is a wasteful number, since it uses less digits than its factorization.

6778504625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19657 (or 19647 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The square root of 6778504625 is about 82331.6744940852. The cubic root of 6778504625 is about 1892.5381038859.

The spelling of 6778504625 in words is "six billion, seven hundred seventy-eight million, five hundred four thousand, six hundred twenty-five".