144331225 has 6 divisors (see below), whose sum is σ = 178970750. Its totient is φ = 115464960.

The previous prime is 144331223. The next prime is 144331249. The reversal of 144331225 is 522133441.

It can be written as a sum of positive squares in 3 ways, for example, as 1982464 + 142348761 = 1408^2 + 11931^2 .

It is not a de Polignac number, because 144331225 - 2¹ = 144331223 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: 5773249 = 144331225 / (1 + 4 + 4 + 3 + 3 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 144331225.

It is not an unprimeable number, because it can be changed into a prime (144331223) 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 5 ways as a sum of consecutive naturals, for example, 2886600 + ... + 2886649.

Almost surely, 2^144331225 is an apocalyptic number.

It is an amenable number.

144331225 is a deficient number, since it is larger than the sum of its proper divisors (34639525).

144331225 is an equidigital number, since it uses as much as digits as its factorization.

144331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773259 (or 5773254 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 144331225 is about 12013.7931145829. The cubic root of 144331225 is about 524.5498484521.

Adding to 144331225 its reverse (522133441), we get a palindrome (666464666).

The spelling of 144331225 in words is "one hundred forty-four million, three hundred thirty-one thousand, two hundred twenty-five".