1122225 has 24 divisors (see below), whose sum is σ = 1999872. Its totient is φ = 552000.

The previous prime is 1122181. The next prime is 1122227. The reversal of 1122225 is 5222211.

It is not a de Polignac number, because 1122225 - 2¹⁵ = 1089457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1122227) 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 23 ways as a sum of consecutive naturals, for example, 400 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (83328).

2^1122225 is an apocalyptic number.

1122225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122225 is a deficient number, since it is larger than the sum of its proper divisors (877647).

1122225 is a wasteful number, since it uses less digits than its factorization.

1122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1172 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 1122225 is about 1059.3512165472. The cubic root of 1122225 is about 103.9186061869.

Adding to 1122225 its reverse (5222211), we get a palindrome (6344436).

The spelling of 1122225 in words is "one million, one hundred twenty-two thousand, two hundred twenty-five".