144420225 has 12 divisors (see below), whose sum is σ = 238774896. Its totient is φ = 77024080.

The previous prime is 144420223. The next prime is 144420251. The reversal of 144420225 is 522024441.

It is a happy number.

It is not a de Polignac number, because 144420225 - 2¹ = 144420223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144420195 and 144420204.

It is not an unprimeable number, because it can be changed into a prime (144420223) 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 11 ways as a sum of consecutive naturals, for example, 962727 + ... + 962876.

It is an arithmetic number, because the mean of its divisors is an integer number (19897908).

Almost surely, 2^144420225 is an apocalyptic number.

144420225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144420225 is a deficient number, since it is larger than the sum of its proper divisors (94354671).

144420225 is a wasteful number, since it uses less digits than its factorization.

144420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925616 (or 1925611 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 144420225 is about 12017.4966195127. The cubic root of 144420225 is about 524.6576452783.

Adding to 144420225 its reverse (522024441), we get a palindrome (666444666).

The spelling of 144420225 in words is "one hundred forty-four million, four hundred twenty thousand, two hundred twenty-five".