4006025 has 12 divisors (see below), whose sum is σ = 5184192. Its totient is φ = 3065040.

The previous prime is 4006019. The next prime is 4006039. The reversal of 4006025 is 5206004.

It is not a de Polignac number, because 4006025 - 2⁸ = 4005769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4005994 and 4006012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2909 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (432016).

Almost surely, 2^4006025 is an apocalyptic number.

It is an amenable number.

4006025 is a deficient number, since it is larger than the sum of its proper divisors (1178167).

4006025 is a wasteful number, since it uses less digits than its factorization.

4006025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000 (or 6995 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 4006025 is about 2001.5056832295. The cubic root of 4006025 is about 158.8197659750.

The spelling of 4006025 in words is "four million, six thousand, twenty-five".