1143225 has 18 divisors (see below), whose sum is σ = 2048046. Its totient is φ = 609600.

The previous prime is 1143223. The next prime is 1143227. The reversal of 1143225 is 5223411.

It is an interprime number because it is at equal distance from previous prime (1143223) and next prime (1143227).

It can be written as a sum of positive squares in 3 ways, for example, as 2601 + 1140624 = 51^2 + 1068^2 .

It is not a de Polignac number, because 1143225 - 2¹ = 1143223 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1143198 and 1143207.

It is not an unprimeable number, because it can be changed into a prime (1143223) 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, 2316 + ... + 2765.

2^1143225 is an apocalyptic number.

1143225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143225 is a deficient number, since it is larger than the sum of its proper divisors (904821).

1143225 is a wasteful number, since it uses less digits than its factorization.

1143225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097 (or 5089 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1143225 is about 1069.2170032318. The cubic root of 1143225 is about 104.5628080261.

Adding to 1143225 its reverse (5223411), we get a palindrome (6366636).

The spelling of 1143225 in words is "one million, one hundred forty-three thousand, two hundred twenty-five".