4005025 has 6 divisors (see below), whose sum is σ = 4966262. Its totient is φ = 3204000.

The previous prime is 4005019. The next prime is 4005049. The reversal of 4005025 is 5205004.

It is a happy number.

4005025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1024 + 4004001 = 32^2 + 2001^2 .

It is not a de Polignac number, because 4005025 - 2⁹ = 4004513 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 (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80076 + ... + 80125.

Almost surely, 2^4005025 is an apocalyptic number.

It is an amenable number.

4005025 is a deficient number, since it is larger than the sum of its proper divisors (961237).

4005025 is a wasteful number, since it uses less digits than its factorization.

4005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160211 (or 160206 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 4005025 is about 2001.2558557066. The cubic root of 4005025 is about 158.8065498000.

The spelling of 4005025 in words is "four million, five thousand, twenty-five".