39395540725 has 12 divisors (see below), whose sum is σ = 49399354980. Its totient is φ = 31162313600.

The previous prime is 39395540707. The next prime is 39395540783. The reversal of 39395540725 is 52704559393.

39395540725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 6388645041 + 33006895684 = 79929^2 + 181678^2 .

It is not a de Polignac number, because 39395540725 - 2⁹ = 39395540213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8850706 + ... + 8855155.

It is an arithmetic number, because the mean of its divisors is an integer number (4116612915).

Almost surely, 2^39395540725 is an apocalyptic number.

It is an amenable number.

39395540725 is a deficient number, since it is larger than the sum of its proper divisors (10003814255).

39395540725 is a wasteful number, since it uses less digits than its factorization.

39395540725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17705960 (or 17705955 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 52.

The spelling of 39395540725 in words is "thirty-nine billion, three hundred ninety-five million, five hundred forty thousand, seven hundred twenty-five".