43634072425 has 12 divisors (see below), whose sum is σ = 54140179276. Its totient is φ = 34885368000.

The previous prime is 43634072411. The next prime is 43634072491. The reversal of 43634072425 is 52427043634.

It can be written as a sum of positive squares in 6 ways, for example, as 11258907664 + 32375164761 = 106108^2 + 179931^2 .

It is not a de Polignac number, because 43634072425 - 2⁹ = 43634071913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 506526 + ... + 586375.

Almost surely, 2^43634072425 is an apocalyptic number.

It is an amenable number.

43634072425 is a deficient number, since it is larger than the sum of its proper divisors (10506106851).

43634072425 is a wasteful number, since it uses less digits than its factorization.

43634072425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094508 (or 1094503 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 40.

The spelling of 43634072425 in words is "forty-three billion, six hundred thirty-four million, seventy-two thousand, four hundred twenty-five".