68278625 has 16 divisors (see below), whose sum is σ = 87200256. Its totient is φ = 53348400.

The previous prime is 68278621. The next prime is 68278627. The reversal of 68278625 is 52687286.

It is not a de Polignac number, because 68278625 - 2² = 68278621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68278621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 977 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (5450016).

Almost surely, 2^68278625 is an apocalyptic number.

It is an amenable number.

68278625 is a deficient number, since it is larger than the sum of its proper divisors (18921631).

68278625 is a wasteful number, since it uses less digits than its factorization.

68278625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12761 (or 12751 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 68278625 is about 8263.0881031246. The cubic root of 68278625 is about 408.7222265698.

The spelling of 68278625 in words is "sixty-eight million, two hundred seventy-eight thousand, six hundred twenty-five".