43723428725 has 24 divisors (see below), whose sum is σ = 55010907648. Its totient is φ = 34470012800.

The previous prime is 43723428641. The next prime is 43723428737. The reversal of 43723428725 is 52782432734.

It is not a de Polignac number, because 43723428725 - 2¹² = 43723424629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43723428725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468137 + ... + 553713.

It is an arithmetic number, because the mean of its divisors is an integer number (2292121152).

Almost surely, 2^43723428725 is an apocalyptic number.

It is an amenable number.

43723428725 is a deficient number, since it is larger than the sum of its proper divisors (11287478923).

43723428725 is a wasteful number, since it uses less digits than its factorization.

43723428725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85885 (or 85880 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 47.

The spelling of 43723428725 in words is "forty-three billion, seven hundred twenty-three million, four hundred twenty-eight thousand, seven hundred twenty-five".