144431425 has 24 divisors (see below), whose sum is σ = 182800800. Its totient is φ = 113182080.

The previous prime is 144431411. The next prime is 144431429. The reversal of 144431425 is 524134441.

It is not a de Polignac number, because 144431425 - 2¹¹ = 144429377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144431393 and 144431402.

It is not an unprimeable number, because it can be changed into a prime (144431429) 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 23 ways as a sum of consecutive naturals, for example, 309042 + ... + 309508.

It is an arithmetic number, because the mean of its divisors is an integer number (7616700).

Almost surely, 2^144431425 is an apocalyptic number.

It is an amenable number.

144431425 is a deficient number, since it is larger than the sum of its proper divisors (38369375).

144431425 is a wasteful number, since it uses less digits than its factorization.

144431425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 700 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 144431425 is about 12017.9625977118. The cubic root of 144431425 is about 524.6712075840.

Adding to 144431425 its reverse (524134441), we get a palindrome (668565866).

The spelling of 144431425 in words is "one hundred forty-four million, four hundred thirty-one thousand, four hundred twenty-five".