143531225 has 12 divisors (see below), whose sum is σ = 187346640. Its totient is φ = 108781200.

The previous prime is 143531207. The next prime is 143531233. The reversal of 143531225 is 522135341.

It is a happy number.

It is not a de Polignac number, because 143531225 - 2⁶ = 143531161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143531194 and 143531203.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 150611 + ... + 151560.

It is an arithmetic number, because the mean of its divisors is an integer number (15612220).

Almost surely, 2^143531225 is an apocalyptic number.

It is an amenable number.

143531225 is a deficient number, since it is larger than the sum of its proper divisors (43815415).

143531225 is a wasteful number, since it uses less digits than its factorization.

143531225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302200 (or 302195 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 143531225 is about 11980.4517861390. The cubic root of 143531225 is about 523.5788929235.

Adding to 143531225 its reverse (522135341), we get a palindrome (665666566).

The spelling of 143531225 in words is "one hundred forty-three million, five hundred thirty-one thousand, two hundred twenty-five".