1109225 has 12 divisors (see below), whose sum is σ = 1481676. Its totient is φ = 818880.

The previous prime is 1109219. The next prime is 1109231. The reversal of 1109225 is 5229011.

It is an interprime number because it is at equal distance from previous prime (1109219) and next prime (1109231).

It can be written as a sum of positive squares in 6 ways, for example, as 4624 + 1104601 = 68^2 + 1051^2 .

It is not a de Polignac number, because 1109225 - 2⁶ = 1109161 is a prime.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1109197 and 1109206.

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 11 ways as a sum of consecutive naturals, for example, 1382 + ... + 2031.

It is an arithmetic number, because the mean of its divisors is an integer number (123473).

2^1109225 is an apocalyptic number.

It is an amenable number.

1109225 is a deficient number, since it is larger than the sum of its proper divisors (372451).

1109225 is a wasteful number, since it uses less digits than its factorization.

1109225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1109225 is about 1053.1975123404. The cubic root of 1109225 is about 103.5157778151.

The spelling of 1109225 in words is "one million, one hundred nine thousand, two hundred twenty-five".