1018225 has 18 divisors (see below), whose sum is σ = 1372866. Its totient is φ = 748800.

The previous prime is 1018223. The next prime is 1018247. The reversal of 1018225 is 5228101.

It can be written as a sum of positive squares in 9 ways, for example, as 516961 + 501264 = 719^2 + 708^2 .

It is not a de Polignac number, because 1018225 - 2¹ = 1018223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018223) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 4105 + ... + 4345.

2^1018225 is an apocalyptic number.

It is an amenable number.

1018225 is a deficient number, since it is larger than the sum of its proper divisors (354641).

1018225 is a wasteful number, since it uses less digits than its factorization.

1018225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1018225 is about 1009.0713552569. The cubic root of 1018225 is about 100.6038463564.

The spelling of 1018225 in words is "one million, eighteen thousand, two hundred twenty-five".