143225501 has 8 divisors (see below), whose sum is σ = 144290520. Its totient is φ = 142164288.

The previous prime is 143225491. The next prime is 143225503. The reversal of 143225501 is 105522341.

It can be written as a sum of positive squares in 4 ways, for example, as 93508900 + 49716601 = 9670^2 + 7051^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143225501 - 2⁶ = 143225437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143225503) 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 7 ways as a sum of consecutive naturals, for example, 162875 + ... + 163751.

It is an arithmetic number, because the mean of its divisors is an integer number (18036315).

Almost surely, 2^143225501 is an apocalyptic number.

It is an amenable number.

143225501 is a deficient number, since it is larger than the sum of its proper divisors (1065019).

143225501 is an equidigital number, since it uses as much as digits as its factorization.

143225501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 143225501 is about 11967.6856994157. The cubic root of 143225501 is about 523.2068846277.

Adding to 143225501 its reverse (105522341), we get a palindrome (248747842).

The spelling of 143225501 in words is "one hundred forty-three million, two hundred twenty-five thousand, five hundred one".