1143825305 has 16 divisors (see below), whose sum is σ = 1636879104. Its totient is φ = 750235200.

The previous prime is 1143825299. The next prime is 1143825307. The reversal of 1143825305 is 5035283411.

It is not a de Polignac number, because 1143825305 - 2⁸ = 1143825049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143825307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709646 + ... + 711255.

It is an arithmetic number, because the mean of its divisors is an integer number (102304944).

Almost surely, 2^1143825305 is an apocalyptic number.

It is an amenable number.

1143825305 is a deficient number, since it is larger than the sum of its proper divisors (493053799).

1143825305 is a wasteful number, since it uses less digits than its factorization.

1143825305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420936.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1143825305 is about 33820.4864690028. The cubic root of 1143825305 is about 1045.8110672586.

The spelling of 1143825305 in words is "one billion, one hundred forty-three million, eight hundred twenty-five thousand, three hundred five".