425785866 has 16 divisors (see below), whose sum is σ = 928987488. Its totient is φ = 129026000.

The previous prime is 425785853. The next prime is 425785873. The reversal of 425785866 is 668587524.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 3225585 + ... + 3225716.

It is an arithmetic number, because the mean of its divisors is an integer number (58061718).

Almost surely, 2^425785866 is an apocalyptic number.

425785866 is an abundant number, since it is smaller than the sum of its proper divisors (503201622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425785866 is a wasteful number, since it uses less digits than its factorization.

425785866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451317.

The product of its digits is 3225600, while the sum is 51.

The square root of 425785866 is about 20634.5793754077. The cubic root of 425785866 is about 752.3104254924.

The spelling of 425785866 in words is "four hundred twenty-five million, seven hundred eighty-five thousand, eight hundred sixty-six".