42244040425 has 6 divisors (see below), whose sum is σ = 52382610158. Its totient is φ = 33795232320.

The previous prime is 42244040389. The next prime is 42244040471. The reversal of 42244040425 is 52404044224.

It can be written as a sum of positive squares in 3 ways, for example, as 10483097769 + 31760942656 = 102387^2 + 178216^2 .

It is not a de Polignac number, because 42244040425 - 2⁹ = 42244039913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844880784 + ... + 844880833.

Almost surely, 2^42244040425 is an apocalyptic number.

It is an amenable number.

42244040425 is a deficient number, since it is larger than the sum of its proper divisors (10138569733).

42244040425 is a wasteful number, since it uses less digits than its factorization.

42244040425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689761627 (or 1689761622 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 31.

Adding to 42244040425 its reverse (52404044224), we get a palindrome (94648084649).

The spelling of 42244040425 in words is "forty-two billion, two hundred forty-four million, forty thousand, four hundred twenty-five".