1123143225 has 12 divisors (see below), whose sum is σ = 1856930256. Its totient is φ = 599009680.

The previous prime is 1123143173. The next prime is 1123143253. The reversal of 1123143225 is 5223413211.

It is not a de Polignac number, because 1123143225 - 2¹¹ = 1123141177 is a prime.

It is a super-2 number, since 2×1123143225² = 2522901407726801250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1123143195 and 1123143204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7487547 + ... + 7487696.

It is an arithmetic number, because the mean of its divisors is an integer number (154744188).

Almost surely, 2^1123143225 is an apocalyptic number.

1123143225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123143225 is a deficient number, since it is larger than the sum of its proper divisors (733787031).

1123143225 is a wasteful number, since it uses less digits than its factorization.

1123143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14975256 (or 14975251 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1123143225 is about 33513.3290647169. The cubic root of 1123143225 is about 1039.4694116107.

Adding to 1123143225 its reverse (5223413211), we get a palindrome (6346556436).

The spelling of 1123143225 in words is "one billion, one hundred twenty-three million, one hundred forty-three thousand, two hundred twenty-five".