43725607789 has 2 divisors, whose sum is σ = 43725607790. Its totient is φ = 43725607788.

The previous prime is 43725607747. The next prime is 43725607813. The reversal of 43725607789 is 98770652734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43710264900 + 15342889 = 209070^2 + 3917^2 .

It is a cyclic number.

It is not a de Polignac number, because 43725607789 - 2²³ = 43717219181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43725607489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21862803894 + 21862803895.

It is an arithmetic number, because the mean of its divisors is an integer number (21862803895).

Almost surely, 2^43725607789 is an apocalyptic number.

It is an amenable number.

43725607789 is a deficient number, since it is larger than the sum of its proper divisors (1).

43725607789 is an equidigital number, since it uses as much as digits as its factorization.

43725607789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 58.

It can be divided in two parts, 4372 and 5607789, that added together give a square (5612161 = 2369²).

The spelling of 43725607789 in words is "forty-three billion, seven hundred twenty-five million, six hundred seven thousand, seven hundred eighty-nine".