1125844777 has 2 divisors, whose sum is σ = 1125844778. Its totient is φ = 1125844776.

The previous prime is 1125844747. The next prime is 1125844781. The reversal of 1125844777 is 7774485211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104166441 + 21678336 = 33229^2 + 4656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125844777 - 2²³ = 1117456169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125844747) 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, 562922388 + 562922389.

It is an arithmetic number, because the mean of its divisors is an integer number (562922389).

Almost surely, 2^1125844777 is an apocalyptic number.

It is an amenable number.

1125844777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125844777 is an equidigital number, since it uses as much as digits as its factorization.

1125844777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 439040, while the sum is 46.

The square root of 1125844777 is about 33553.6104912720. The cubic root of 1125844777 is about 1040.3021733509.

The spelling of 1125844777 in words is "one billion, one hundred twenty-five million, eight hundred forty-four thousand, seven hundred seventy-seven".