68407425 has 18 divisors (see below), whose sum is σ = 122525702. Its totient is φ = 36483840.

The previous prime is 68407403. The next prime is 68407441. The reversal of 68407425 is 52470486.

It can be written as a sum of positive squares in 3 ways, for example, as 641601 + 67765824 = 801^2 + 8232^2 .

It is not a de Polignac number, because 68407425 - 2²¹ = 66310273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68407425.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 151792 + ... + 152241.

Almost surely, 2^68407425 is an apocalyptic number.

It is an amenable number.

68407425 is a deficient number, since it is larger than the sum of its proper divisors (54118277).

68407425 is a wasteful number, since it uses less digits than its factorization.

68407425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304049 (or 304041 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 68407425 is about 8270.8781275025. The cubic root of 68407425 is about 408.9790680799.

The spelling of 68407425 in words is "sixty-eight million, four hundred seven thousand, four hundred twenty-five".