144840725 has 12 divisors (see below), whose sum is σ = 180600420. Its totient is φ = 115228800.

The previous prime is 144840721. The next prime is 144840737. The reversal of 144840725 is 527048441.

It can be written as a sum of positive squares in 6 ways, for example, as 83594449 + 61246276 = 9143^2 + 7826^2 .

It is not a de Polignac number, because 144840725 - 2² = 144840721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144840721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11480 + ... + 20529.

It is an arithmetic number, because the mean of its divisors is an integer number (15050035).

Almost surely, 2^144840725 is an apocalyptic number.

It is an amenable number.

144840725 is a deficient number, since it is larger than the sum of its proper divisors (35759695).

144840725 is a wasteful number, since it uses less digits than its factorization.

144840725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32200 (or 32195 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 144840725 is about 12034.9792272359. The cubic root of 144840725 is about 525.1663569558.

The spelling of 144840725 in words is "one hundred forty-four million, eight hundred forty thousand, seven hundred twenty-five".