1125253143 has 12 divisors (see below), whose sum is σ = 1857560848. Its totient is φ = 643001760.

The previous prime is 1125253117. The next prime is 1125253177. The reversal of 1125253143 is 3413525211.

1125253143 is a `hidden beast` number, since 1 + 125 + 2 + 531 + 4 + 3 = 666.

It is not a de Polignac number, because 1125253143 - 2⁹ = 1125252631 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 (1125253183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8930518 + ... + 8930643.

Almost surely, 2^1125253143 is an apocalyptic number.

1125253143 is a deficient number, since it is larger than the sum of its proper divisors (732307705).

1125253143 is a wasteful number, since it uses less digits than its factorization.

1125253143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17861174 (or 17861171 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1125253143 is about 33544.7930832790. The cubic root of 1125253143 is about 1040.1199143659.

Adding to 1125253143 its reverse (3413525211), we get a palindrome (4538778354).

The spelling of 1125253143 in words is "one billion, one hundred twenty-five million, two hundred fifty-three thousand, one hundred forty-three".