1125540441 has 10 divisors (see below), whose sum is σ = 1681363002. Its totient is φ = 750360240.

The previous prime is 1125540439. The next prime is 1125540457. The reversal of 1125540441 is 1440455211.

1125540441 is a `hidden beast` number, since 1 + 1 + 255 + 404 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 666724041 + 458816400 = 25821^2 + 21420^2 .

It is not a de Polignac number, because 1125540441 - 2¹ = 1125540439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1125540841) 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 9 ways as a sum of consecutive naturals, for example, 6947700 + ... + 6947861.

Almost surely, 2^1125540441 is an apocalyptic number.

It is an amenable number.

1125540441 is a deficient number, since it is larger than the sum of its proper divisors (555822561).

1125540441 is an equidigital number, since it uses as much as digits as its factorization.

1125540441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13895573 (or 13895564 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1125540441 is about 33549.0751139283. The cubic root of 1125540441 is about 1040.2084274691.

Adding to 1125540441 its reverse (1440455211), we get a palindrome (2565995652).

The spelling of 1125540441 in words is "one billion, one hundred twenty-five million, five hundred forty thousand, four hundred forty-one".