1125355571 has 2 divisors, whose sum is σ = 1125355572. Its totient is φ = 1125355570.

The previous prime is 1125355549. The next prime is 1125355589. The reversal of 1125355571 is 1755535211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1125355571 - 2⁶ = 1125355507 is a prime.

It is a super-2 number, since 2×1125355571² = 2532850322361472082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1125355531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562677785 + 562677786.

It is an arithmetic number, because the mean of its divisors is an integer number (562677786).

Almost surely, 2^1125355571 is an apocalyptic number.

1125355571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125355571 is an equidigital number, since it uses as much as digits as its factorization.

1125355571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26250, while the sum is 35.

The square root of 1125355571 is about 33546.3197832490. The cubic root of 1125355571 is about 1040.1514729447.

The spelling of 1125355571 in words is "one billion, one hundred twenty-five million, three hundred fifty-five thousand, five hundred seventy-one".