1125771529 has 2 divisors, whose sum is σ = 1125771530. Its totient is φ = 1125771528.

The previous prime is 1125771497. The next prime is 1125771539. The reversal of 1125771529 is 9251775211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 800041225 + 325730304 = 28285^2 + 18048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125771529 - 2⁵ = 1125771497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125771491 and 1125771500.

It is not a weakly prime, because it can be changed into another prime (1125771539) 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 as a sum of consecutive naturals, namely, 562885764 + 562885765.

It is an arithmetic number, because the mean of its divisors is an integer number (562885765).

Almost surely, 2^1125771529 is an apocalyptic number.

It is an amenable number.

1125771529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125771529 is an equidigital number, since it uses as much as digits as its factorization.

1125771529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 40.

The square root of 1125771529 is about 33552.5189665396. The cubic root of 1125771529 is about 1040.2796120092.

The spelling of 1125771529 in words is "one billion, one hundred twenty-five million, seven hundred seventy-one thousand, five hundred twenty-nine".