1125052311 has 4 divisors (see below), whose sum is σ = 1500069752. Its totient is φ = 750034872.

The previous prime is 1125052309. The next prime is 1125052319. The reversal of 1125052311 is 1132505211.

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

It is not a de Polignac number, because 1125052311 - 2¹ = 1125052309 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 (1125052319) 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, 187508716 + ... + 187508721.

It is an arithmetic number, because the mean of its divisors is an integer number (375017438).

Almost surely, 2^1125052311 is an apocalyptic number.

1125052311 is a deficient number, since it is larger than the sum of its proper divisors (375017441).

1125052311 is an equidigital number, since it uses as much as digits as its factorization.

1125052311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375017440.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1125052311 is about 33541.7994597785. The cubic root of 1125052311 is about 1040.0580314635.

Adding to 1125052311 its reverse (1132505211), we get a palindrome (2257557522).

Subtracting 1125052311 from its reverse (1132505211), we obtain a square (7452900 = 2730²).

The spelling of 1125052311 in words is "one billion, one hundred twenty-five million, fifty-two thousand, three hundred eleven".