1125563543 has 8 divisors (see below), whose sum is σ = 1212968736. Its totient is φ = 1038276000.

The previous prime is 1125563441. The next prime is 1125563563. The reversal of 1125563543 is 3453655211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125563543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125563563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9008 + ... + 48293.

It is an arithmetic number, because the mean of its divisors is an integer number (151621092).

Almost surely, 2^1125563543 is an apocalyptic number.

1125563543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1125563543 is a deficient number, since it is larger than the sum of its proper divisors (87405193).

1125563543 is a wasteful number, since it uses less digits than its factorization.

1125563543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58825.

The product of its digits is 54000, while the sum is 35.

The square root of 1125563543 is about 33549.4194137544. The cubic root of 1125563543 is about 1040.2155442668.

It can be divided in two parts, 112 and 5563543, that added together give a palindrome (5563655).

The spelling of 1125563543 in words is "one billion, one hundred twenty-five million, five hundred sixty-three thousand, five hundred forty-three".