4066357825 has 6 divisors (see below), whose sum is σ = 5042283734. Its totient is φ = 3253086240.

The previous prime is 4066357811. The next prime is 4066357837. The reversal of 4066357825 is 5287536604.

It is a Cunningham number, because it is equal to 63768²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 4066357824 = 1^2 + 63768^2 .

It is not a de Polignac number, because 4066357825 - 2²⁷ = 3932140097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81327132 + ... + 81327181.

Almost surely, 2^4066357825 is an apocalyptic number.

It is an amenable number.

4066357825 is a deficient number, since it is larger than the sum of its proper divisors (975925909).

4066357825 is a wasteful number, since it uses less digits than its factorization.

4066357825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162654323 (or 162654318 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The square root of 4066357825 is about 63768.0000078409. Note that the first 5 decimals coincide. The cubic root of 4066357825 is about 1596.1309935813.

The spelling of 4066357825 in words is "four billion, sixty-six million, three hundred fifty-seven thousand, eight hundred twenty-five".