4025865 has 16 divisors (see below), whose sum is σ = 6552000. Its totient is φ = 2110272.

The previous prime is 4025863. The next prime is 4025873. The reversal of 4025865 is 5685204.

It is not a de Polignac number, because 4025865 - 2¹ = 4025863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4025863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (409500).

Almost surely, 2^4025865 is an apocalyptic number.

It is an amenable number.

4025865 is a deficient number, since it is larger than the sum of its proper divisors (2526135).

4025865 is a wasteful number, since it uses less digits than its factorization.

4025865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 4025865 is about 2006.4558305629. The cubic root of 4025865 is about 159.0815214250.

The spelling of 4025865 in words is "four million, twenty-five thousand, eight hundred sixty-five".