39642552725 has 24 divisors (see below), whose sum is σ = 49545444960. Its totient is φ = 31464105920.

The previous prime is 39642552673. The next prime is 39642552751. The reversal of 39642552725 is 52725524693.

39642552725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39642552725 - 2¹⁴ = 39642536341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1972427 + ... + 1992423.

It is an arithmetic number, because the mean of its divisors is an integer number (2064393540).

Almost surely, 2^39642552725 is an apocalyptic number.

It is an amenable number.

39642552725 is a deficient number, since it is larger than the sum of its proper divisors (9902892235).

39642552725 is a wasteful number, since it uses less digits than its factorization.

39642552725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20629 (or 20624 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 50.

The spelling of 39642552725 in words is "thirty-nine billion, six hundred forty-two million, five hundred fifty-two thousand, seven hundred twenty-five".