4018225 has 12 divisors (see below), whose sum is σ = 5037004. Its totient is φ = 3179520.

The previous prime is 4018207. The next prime is 4018243. The reversal of 4018225 is 5228104.

It is an interprime number because it is at equal distance from previous prime (4018207) and next prime (4018243).

It can be written as a sum of positive squares in 6 ways, for example, as 266256 + 3751969 = 516^2 + 1937^2 .

It is not a de Polignac number, because 4018225 - 2⁷ = 4018097 is a prime.

It is a super-2 number, since 2×4018225² = 32292264301250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4018196 and 4018205.

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, 1597 + ... + 3253.

Almost surely, 2^4018225 is an apocalyptic number.

It is an amenable number.

4018225 is a deficient number, since it is larger than the sum of its proper divisors (1018779).

4018225 is a wasteful number, since it uses less digits than its factorization.

4018225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4018225 is about 2004.5510719361. The cubic root of 4018225 is about 158.9808265054.

It can be divided in two parts, 40 and 18225, that multiplied together give a cube (729000 = 90³).

The spelling of 4018225 in words is "four million, eighteen thousand, two hundred twenty-five".