1125266611 has 4 divisors (see below), whose sum is σ = 1286018992. Its totient is φ = 964514232.

The previous prime is 1125266579. The next prime is 1125266627. The reversal of 1125266611 is 1166625211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125266611 - 2⁵ = 1125266579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125266711) 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, 80376180 + ... + 80376193.

It is an arithmetic number, because the mean of its divisors is an integer number (321504748).

Almost surely, 2^1125266611 is an apocalyptic number.

1125266611 is a deficient number, since it is larger than the sum of its proper divisors (160752381).

1125266611 is an equidigital number, since it uses as much as digits as its factorization.

1125266611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160752380.

The product of its digits is 4320, while the sum is 31.

The square root of 1125266611 is about 33544.9938291841. The cubic root of 1125266611 is about 1040.1240640333.

The spelling of 1125266611 in words is "one billion, one hundred twenty-five million, two hundred sixty-six thousand, six hundred eleven".