1125166223 has 4 divisors (see below), whose sum is σ = 1131670248. Its totient is φ = 1118662200.

The previous prime is 1125166171. The next prime is 1125166243. The reversal of 1125166223 is 3226615211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3226615211 = 257 ⋅12554923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125166223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125166243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3251753 + ... + 3252098.

It is an arithmetic number, because the mean of its divisors is an integer number (282917562).

Almost surely, 2^1125166223 is an apocalyptic number.

1125166223 is a deficient number, since it is larger than the sum of its proper divisors (6504025).

1125166223 is an equidigital number, since it uses as much as digits as its factorization.

1125166223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504024.

The product of its digits is 4320, while the sum is 29.

The square root of 1125166223 is about 33543.4974771564. The cubic root of 1125166223 is about 1040.0931323772.

The spelling of 1125166223 in words is "one billion, one hundred twenty-five million, one hundred sixty-six thousand, two hundred twenty-three".