143225643 has 24 divisors (see below), whose sum is σ = 210578368. Its totient is φ = 86526000.

The previous prime is 143225639. The next prime is 143225651. The reversal of 143225643 is 346522341.

It is not a de Polignac number, because 143225643 - 2² = 143225639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143225643.

It is not an unprimeable number, because it can be changed into a prime (143225603) 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 in 23 ways as a sum of consecutive naturals, for example, 206928 + ... + 207618.

Almost surely, 2^143225643 is an apocalyptic number.

143225643 is a deficient number, since it is larger than the sum of its proper divisors (67352725).

143225643 is a wasteful number, since it uses less digits than its factorization.

143225643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1276 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 143225643 is about 11967.6916320567. The cubic root of 143225643 is about 523.2070575377.

Adding to 143225643 its reverse (346522341), we get a palindrome (489747984).

The spelling of 143225643 in words is "one hundred forty-three million, two hundred twenty-five thousand, six hundred forty-three".