1111225 has 6 divisors (see below), whose sum is σ = 1377950. Its totient is φ = 888960.

The previous prime is 1111219. The next prime is 1111247. The reversal of 1111225 is 5221111.

It can be written as a sum of positive squares in 3 ways, for example, as 212521 + 898704 = 461^2 + 948^2 .

It is not a de Polignac number, because 1111225 - 2⁹ = 1110713 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 22200 + ... + 22249.

2^1111225 is an apocalyptic number.

It is an amenable number.

1111225 is a deficient number, since it is larger than the sum of its proper divisors (266725).

1111225 is an equidigital number, since it uses as much as digits as its factorization.

1111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44459 (or 44454 counting only the distinct ones).

The product of its digits is 20, while the sum is 13.

The square root of 1111225 is about 1054.1465742486. The cubic root of 1111225 is about 103.5779555368.

Adding to 1111225 its reverse (5221111), we get a palindrome (6332336).

It can be divided in two parts, 11 and 11225, that added together give a square (11236 = 106²).

The spelling of 1111225 in words is "one million, one hundred eleven thousand, two hundred twenty-five".