39385540125 has 24 divisors (see below), whose sum is σ = 70999002360. Its totient is φ = 21005620800.

The previous prime is 39385540123. The next prime is 39385540157. The reversal of 39385540125 is 52104558393.

39385540125 is a `hidden beast` number, since 3 + 9 + 3 + 85 + 540 + 1 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3938441049 + 35447099076 = 62757^2 + 188274^2 .

It is not a de Polignac number, because 39385540125 - 2¹ = 39385540123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39385540123) by changing a digit.

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, 17503560 + ... + 17505809.

It is an arithmetic number, because the mean of its divisors is an integer number (2958291765).

Almost surely, 2^39385540125 is an apocalyptic number.

It is an amenable number.

39385540125 is a deficient number, since it is larger than the sum of its proper divisors (31613462235).

39385540125 is a wasteful number, since it uses less digits than its factorization.

39385540125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35009390 (or 35009377 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 39385540125 in words is "thirty-nine billion, three hundred eighty-five million, five hundred forty thousand, one hundred twenty-five".