144220325 has 12 divisors (see below), whose sum is σ = 179164128. Its totient is φ = 115162800.

The previous prime is 144220303. The next prime is 144220331. The reversal of 144220325 is 523022441.

It is a happy number.

It is not a de Polignac number, because 144220325 - 2²² = 140026021 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144220325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9224 + ... + 19326.

It is an arithmetic number, because the mean of its divisors is an integer number (14930344).

Almost surely, 2^144220325 is an apocalyptic number.

It is an amenable number.

144220325 is a deficient number, since it is larger than the sum of its proper divisors (34943803).

144220325 is a wasteful number, since it uses less digits than its factorization.

144220325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684 (or 10679 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 144220325 is about 12009.1766995078. The cubic root of 144220325 is about 524.4154643091.

Adding to 144220325 its reverse (523022441), we get a palindrome (667242766).

The spelling of 144220325 in words is "one hundred forty-four million, two hundred twenty thousand, three hundred twenty-five".