144423225 has 18 divisors (see below), whose sum is σ = 258678446. Its totient is φ = 77025600.

The previous prime is 144423221. The next prime is 144423229. The reversal of 144423225 is 522324441.

144423225 is a `hidden beast` number, since 14 + 4 + 423 + 225 = 666.

It is an interprime number because it is at equal distance from previous prime (144423221) and next prime (144423229).

It can be written as a sum of positive squares in 3 ways, for example, as 25765776 + 118657449 = 5076^2 + 10893^2 .

It is not a de Polignac number, because 144423225 - 2² = 144423221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144423221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 320716 + ... + 321165.

Almost surely, 2^144423225 is an apocalyptic number.

144423225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144423225 is a deficient number, since it is larger than the sum of its proper divisors (114255221).

144423225 is a wasteful number, since it uses less digits than its factorization.

144423225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641897 (or 641889 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 144423225 is about 12017.6214368734. The cubic root of 144423225 is about 524.6612781075.

Adding to 144423225 its reverse (522324441), we get a palindrome (666747666).

The spelling of 144423225 in words is "one hundred forty-four million, four hundred twenty-three thousand, two hundred twenty-five".