68017925 has 6 divisors (see below), whose sum is σ = 84342258. Its totient is φ = 54414320.

The previous prime is 68017909. The next prime is 68017933. The reversal of 68017925 is 52971086.

It can be written as a sum of positive squares in 3 ways, for example, as 925444 + 67092481 = 962^2 + 8191^2 .

It is not a de Polignac number, because 68017925 - 2⁴ = 68017909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1360334 + ... + 1360383.

It is an arithmetic number, because the mean of its divisors is an integer number (14057043).

Almost surely, 2^68017925 is an apocalyptic number.

It is an amenable number.

68017925 is a deficient number, since it is larger than the sum of its proper divisors (16324333).

68017925 is a wasteful number, since it uses less digits than its factorization.

68017925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720727 (or 2720722 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 68017925 is about 8247.2980423894. The cubic root of 68017925 is about 408.2013715839.

The spelling of 68017925 in words is "sixty-eight million, seventeen thousand, nine hundred twenty-five".