68213327825 has 12 divisors (see below), whose sum is σ = 84588133260. Its totient is φ = 54568335360.

The previous prime is 68213327821. The next prime is 68213327827. The reversal of 68213327825 is 52872331286.

It can be written as a sum of positive squares in 6 ways, for example, as 16612116544 + 51601211281 = 128888^2 + 227159^2 .

It is not a de Polignac number, because 68213327825 - 2² = 68213327821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68213327825.

It is not an unprimeable number, because it can be changed into a prime (68213327821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 772337 + ... + 856113.

It is an arithmetic number, because the mean of its divisors is an integer number (7049011105).

Almost surely, 2^68213327825 is an apocalyptic number.

It is an amenable number.

68213327825 is a deficient number, since it is larger than the sum of its proper divisors (16374805435).

68213327825 is a wasteful number, since it uses less digits than its factorization.

68213327825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116356 (or 116351 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The spelling of 68213327825 in words is "sixty-eight billion, two hundred thirteen million, three hundred twenty-seven thousand, eight hundred twenty-five".