1143587125 has 16 divisors (see below), whose sum is σ = 1440307440. Its totient is φ = 906465600.

The previous prime is 1143587111. The next prime is 1143587153. The reversal of 1143587125 is 5217853411.

It can be written as a sum of positive squares in 8 ways, for example, as 118178641 + 1025408484 = 10871^2 + 32022^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1143587125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28342 + ... + 55591.

It is an arithmetic number, because the mean of its divisors is an integer number (90019215).

Almost surely, 2^1143587125 is an apocalyptic number.

It is an amenable number.

1143587125 is a deficient number, since it is larger than the sum of its proper divisors (296720315).

1143587125 is an equidigital number, since it uses as much as digits as its factorization.

1143587125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84057 (or 84047 counting only the distinct ones).

The product of its digits is 33600, while the sum is 37.

The square root of 1143587125 is about 33816.9650471476. The cubic root of 1143587125 is about 1045.7384720903.

The spelling of 1143587125 in words is "one billion, one hundred forty-three million, five hundred eighty-seven thousand, one hundred twenty-five".