68778650225 has 12 divisors (see below), whose sum is σ = 85957069824. Its totient is φ = 54589666320.

The previous prime is 68778650207. The next prime is 68778650233. The reversal of 68778650225 is 52205687786.

It is a happy number.

It is not a de Polignac number, because 68778650225 - 2⁸ = 68778649969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10828109 + ... + 10834458.

It is an arithmetic number, because the mean of its divisors is an integer number (7163089152).

Almost surely, 2^68778650225 is an apocalyptic number.

It is an amenable number.

68778650225 is a deficient number, since it is larger than the sum of its proper divisors (17178419599).

68778650225 is a wasteful number, since it uses less digits than its factorization.

68778650225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662704 (or 21662699 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 68778650225 in words is "sixty-eight billion, seven hundred seventy-eight million, six hundred fifty thousand, two hundred twenty-five".