143323225 has 6 divisors (see below), whose sum is σ = 177720830. Its totient is φ = 114658560.

The previous prime is 143323157. The next prime is 143323231. The reversal of 143323225 is 522323341.

It can be written as a sum of positive squares in 3 ways, for example, as 18688329 + 124634896 = 4323^2 + 11164^2 .

It is not a de Polignac number, because 143323225 - 2¹⁹ = 142798937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5732929 = 143323225 / (1 + 4 + 3 + 3 + 2 + 3 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 143323225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2866440 + ... + 2866489.

Almost surely, 2^143323225 is an apocalyptic number.

It is an amenable number.

143323225 is a deficient number, since it is larger than the sum of its proper divisors (34397605).

143323225 is an equidigital number, since it uses as much as digits as its factorization.

143323225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732939 (or 5732934 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 143323225 is about 11971.7678310265. The cubic root of 143323225 is about 523.3258537704.

Adding to 143323225 its reverse (522323341), we get a palindrome (665646566).

The spelling of 143323225 in words is "one hundred forty-three million, three hundred twenty-three thousand, two hundred twenty-five".