144940425 has 48 divisors (see below), whose sum is σ = 279089280. Its totient is φ = 64995840.

The previous prime is 144940421. The next prime is 144940427. The reversal of 144940425 is 524049441.

It is not a de Polignac number, because 144940425 - 2² = 144940421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144940421) 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 47 ways as a sum of consecutive naturals, for example, 25221 + ... + 30429.

It is an arithmetic number, because the mean of its divisors is an integer number (5814360).

Almost surely, 2^144940425 is an apocalyptic number.

144940425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144940425 is a deficient number, since it is larger than the sum of its proper divisors (134148855).

144940425 is a wasteful number, since it uses less digits than its factorization.

144940425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282 (or 5277 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 144940425 is about 12039.1206074198. The cubic root of 144940425 is about 525.2868273938.

Adding to 144940425 its reverse (524049441), we get a palindrome (668989866).

The spelling of 144940425 in words is "one hundred forty-four million, nine hundred forty thousand, four hundred twenty-five".