68305925 has 6 divisors (see below), whose sum is σ = 84699378. Its totient is φ = 54644720.

The previous prime is 68305873. The next prime is 68305943. The reversal of 68305925 is 52950386.

It can be written as a sum of positive squares in 3 ways, for example, as 7059649 + 61246276 = 2657^2 + 7826^2 .

It is not a de Polignac number, because 68305925 - 2⁸ = 68305669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1366094 + ... + 1366143.

It is an arithmetic number, because the mean of its divisors is an integer number (14116563).

Almost surely, 2^68305925 is an apocalyptic number.

It is an amenable number.

68305925 is a deficient number, since it is larger than the sum of its proper divisors (16393453).

68305925 is a wasteful number, since it uses less digits than its factorization.

68305925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732247 (or 2732242 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 68305925 is about 8264.7398628148. The cubic root of 68305925 is about 408.7766927613.

The spelling of 68305925 in words is "sixty-eight million, three hundred five thousand, nine hundred twenty-five".