68212890625 has 48 divisors (see below), whose sum is σ = 93749999616. Its totient is φ = 49218750000.

The previous prime is 68212890617. The next prime is 68212890667. The reversal of 68212890625 is 52609821286.

It is a happy number.

It is a trimorphic number since its cube, 317394474172033369541168212890625, ends in 68212890625.

It is not a de Polignac number, because 68212890625 - 2³ = 68212890617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 537109312 + ... + 537109438.

It is an arithmetic number, because the mean of its divisors is an integer number (1953124992).

Almost surely, 2^68212890625 is an apocalyptic number.

It is an amenable number.

68212890625 is a deficient number, since it is larger than the sum of its proper divisors (25537108991).

68212890625 is an frugal number, since it uses more digits than its factorization.

68212890625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 68212890625 in words is "sixty-eight billion, two hundred twelve million, eight hundred ninety thousand, six hundred twenty-five".