20443305436125 has 64 divisors (see below), whose sum is σ = 39964803750144. Its totient is φ = 9149451360000.

The previous prime is 20443305436123. The next prime is 20443305436139. The reversal of 20443305436125 is 52163450334402.

It is not a de Polignac number, because 20443305436125 - 2¹ = 20443305436123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443305436123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 190559946 + ... + 190667195.

It is an arithmetic number, because the mean of its divisors is an integer number (624450058596).

Almost surely, 2^{20443305436125} is an apocalyptic number.

20443305436125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20443305436125 is a deficient number, since it is larger than the sum of its proper divisors (19521498314019).

20443305436125 is a wasteful number, since it uses less digits than its factorization.

20443305436125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381227183 (or 381227173 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 20443305436125 in words is "twenty trillion, four hundred forty-three billion, three hundred five million, four hundred thirty-six thousand, one hundred twenty-five".