1125542441 has 2 divisors, whose sum is σ = 1125542442. Its totient is φ = 1125542440.

The previous prime is 1125542423. The next prime is 1125542449. The reversal of 1125542441 is 1442455211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901740841 + 223801600 = 30029^2 + 14960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125542441 - 2¹⁴ = 1125526057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125542449) 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 as a sum of consecutive naturals, namely, 562771220 + 562771221.

It is an arithmetic number, because the mean of its divisors is an integer number (562771221).

Almost surely, 2^1125542441 is an apocalyptic number.

It is an amenable number.

1125542441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125542441 is an equidigital number, since it uses as much as digits as its factorization.

1125542441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 29.

The square root of 1125542441 is about 33549.1049209960. The cubic root of 1125542441 is about 1040.2090435926.

Adding to 1125542441 its reverse (1442455211), we get a palindrome (2567997652).

The spelling of 1125542441 in words is "one billion, one hundred twenty-five million, five hundred forty-two thousand, four hundred forty-one".