1125572311 has 4 divisors (see below), whose sum is σ = 1125658800. Its totient is φ = 1125485824.

The previous prime is 1125572299. The next prime is 1125572317. The reversal of 1125572311 is 1132755211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1125572311 - 2¹¹ = 1125570263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125572311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125572317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19306 + ... + 51223.

It is an arithmetic number, because the mean of its divisors is an integer number (281414700).

Almost surely, 2^1125572311 is an apocalyptic number.

1125572311 is a deficient number, since it is larger than the sum of its proper divisors (86489).

1125572311 is an equidigital number, since it uses as much as digits as its factorization.

1125572311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86488.

The product of its digits is 2100, while the sum is 28.

The square root of 1125572311 is about 33549.5500864021. The cubic root of 1125572311 is about 1040.2182453097.

The spelling of 1125572311 in words is "one billion, one hundred twenty-five million, five hundred seventy-two thousand, three hundred eleven".