1125435543 has 16 divisors (see below), whose sum is σ = 1528104576. Its totient is φ = 736575840.

The previous prime is 1125435533. The next prime is 1125435551. The reversal of 1125435543 is 3455345211.

It is not a de Polignac number, because 1125435543 - 2²⁸ = 857000087 is a prime.

It is a super-2 number, since 2×1125435543² = 2533210322895409698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125435533) 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 in 15 ways as a sum of consecutive naturals, for example, 94480 + ... + 105722.

It is an arithmetic number, because the mean of its divisors is an integer number (95506536).

Almost surely, 2^1125435543 is an apocalyptic number.

1125435543 is a deficient number, since it is larger than the sum of its proper divisors (402669033).

1125435543 is a wasteful number, since it uses less digits than its factorization.

1125435543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11854.

The product of its digits is 36000, while the sum is 33.

The square root of 1125435543 is about 33547.5117259090. The cubic root of 1125435543 is about 1040.1761113865.

The spelling of 1125435543 in words is "one billion, one hundred twenty-five million, four hundred thirty-five thousand, five hundred forty-three".