4066025 has 6 divisors (see below), whose sum is σ = 5041902. Its totient is φ = 3252800.

The previous prime is 4066021. The next prime is 4066031. The reversal of 4066025 is 5206604.

It can be written as a sum of positive squares in 3 ways, for example, as 21904 + 4044121 = 148^2 + 2011^2 .

It is not a de Polignac number, because 4066025 - 2² = 4066021 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4066021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81296 + ... + 81345.

It is an arithmetic number, because the mean of its divisors is an integer number (840317).

Almost surely, 2^4066025 is an apocalyptic number.

It is an amenable number.

4066025 is a deficient number, since it is larger than the sum of its proper divisors (975877).

4066025 is a wasteful number, since it uses less digits than its factorization.

4066025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162651 (or 162646 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4066025 is about 2016.4386923485. The cubic root of 4066025 is about 159.6087445455.

The spelling of 4066025 in words is "four million, sixty-six thousand, twenty-five".