1125756571 has 2 divisors, whose sum is σ = 1125756572. Its totient is φ = 1125756570.

The previous prime is 1125756563. The next prime is 1125756589. The reversal of 1125756571 is 1756575211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125756571 - 2³ = 1125756563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125757571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562878285 + 562878286.

It is an arithmetic number, because the mean of its divisors is an integer number (562878286).

Almost surely, 2^1125756571 is an apocalyptic number.

1125756571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125756571 is an equidigital number, since it uses as much as digits as its factorization.

1125756571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73500, while the sum is 40.

The square root of 1125756571 is about 33552.2960615216. The cubic root of 1125756571 is about 1040.2750046293.

The spelling of 1125756571 in words is "one billion, one hundred twenty-five million, seven hundred fifty-six thousand, five hundred seventy-one".