144669225 has 24 divisors (see below), whose sum is σ = 239915200. Its totient is φ = 76921920.

The previous prime is 144669209. The next prime is 144669229. The reversal of 144669225 is 522966441.

It is a happy number.

It is not a de Polignac number, because 144669225 - 2⁴ = 144669209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144669229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23412 + ... + 28938.

Almost surely, 2^144669225 is an apocalyptic number.

144669225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144669225 is a deficient number, since it is larger than the sum of its proper divisors (95245975).

144669225 is a wasteful number, since it uses less digits than its factorization.

144669225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889 (or 5884 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 144669225 is about 12027.8520526318. The cubic root of 144669225 is about 524.9589990656.

The spelling of 144669225 in words is "one hundred forty-four million, six hundred sixty-nine thousand, two hundred twenty-five".