4013225 has 12 divisors (see below), whose sum is σ = 5005260. Its totient is φ = 3192000.

The previous prime is 4013209. The next prime is 4013227. The reversal of 4013225 is 5223104.

It can be written as a sum of positive squares in 6 ways, for example, as 399424 + 3613801 = 632^2 + 1901^2 .

It is not a de Polignac number, because 4013225 - 2⁴ = 4013209 is a prime.

It is a super-2 number, since 2×4013225² = 32211949801250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4013227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5375 + ... + 6075.

It is an arithmetic number, because the mean of its divisors is an integer number (417105).

Almost surely, 2^4013225 is an apocalyptic number.

It is an amenable number.

4013225 is a deficient number, since it is larger than the sum of its proper divisors (992035).

4013225 is a wasteful number, since it uses less digits than its factorization.

4013225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 935 counting only the distinct ones).

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

The square root of 4013225 is about 2003.3035216861. The cubic root of 4013225 is about 158.9148575707.

Adding to 4013225 its reverse (5223104), we get a palindrome (9236329).

The spelling of 4013225 in words is "four million, thirteen thousand, two hundred twenty-five".