1143225505 has 4 divisors (see below), whose sum is σ = 1371870612. Its totient is φ = 914580400.

The previous prime is 1143225493. The next prime is 1143225527. The reversal of 1143225505 is 5055223411.

1143225505 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271854144 + 871371361 = 16488^2 + 29519^2 .

It is not a de Polignac number, because 1143225505 - 2²⁷ = 1009007777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114322546 + ... + 114322555.

It is an arithmetic number, because the mean of its divisors is an integer number (342967653).

Almost surely, 2^1143225505 is an apocalyptic number.

It is an amenable number.

1143225505 is a deficient number, since it is larger than the sum of its proper divisors (228645107).

1143225505 is an equidigital number, since it uses as much as digits as its factorization.

1143225505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228645106.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1143225505 is about 33811.6178997693. The cubic root of 1143225505 is about 1045.6282342241.

Adding to 1143225505 its reverse (5055223411), we get a palindrome (6198448916).

The spelling of 1143225505 in words is "one billion, one hundred forty-three million, two hundred twenty-five thousand, five hundred five".