143857225 has 6 divisors (see below), whose sum is σ = 178382990. Its totient is φ = 115085760.

The previous prime is 143857223. The next prime is 143857237. The reversal of 143857225 is 522758341.

It can be written as a sum of positive squares in 3 ways, for example, as 121104 + 143736121 = 348^2 + 11989^2 .

It is not a de Polignac number, because 143857225 - 2¹ = 143857223 is a prime.

It is a super-3 number, since 3×143857225³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (143857223) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2877120 + ... + 2877169.

Almost surely, 2^143857225 is an apocalyptic number.

It is an amenable number.

143857225 is a deficient number, since it is larger than the sum of its proper divisors (34525765).

143857225 is an equidigital number, since it uses as much as digits as its factorization.

143857225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754299 (or 5754294 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 143857225 is about 11994.0495663475. The cubic root of 143857225 is about 523.9749917653.

The spelling of 143857225 in words is "one hundred forty-three million, eight hundred fifty-seven thousand, two hundred twenty-five".