4025805 has 32 divisors (see below), whose sum is σ = 7686144. Its totient is φ = 1759296.

The previous prime is 4025797. The next prime is 4025807. The reversal of 4025805 is 5085204.

4025805 = 322² + 323² + ... + 356².

It is not a de Polignac number, because 4025805 - 2³ = 4025797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1582 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (240192).

Almost surely, 2^4025805 is an apocalyptic number.

It is an amenable number.

4025805 is a deficient number, since it is larger than the sum of its proper divisors (3660339).

4025805 is a wasteful number, since it uses less digits than its factorization.

4025805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4025805 is about 2006.4408787702. The cubic root of 4025805 is about 159.0807311238.

The spelling of 4025805 in words is "four million, twenty-five thousand, eight hundred five".