39500129925 has 36 divisors (see below), whose sum is σ = 73369470720. Its totient is φ = 21066732720.

The previous prime is 39500129899. The next prime is 39500129987. The reversal of 39500129925 is 52992100593.

39500129925 is a `hidden beast` number, since 39 + 500 + 1 + 2 + 99 + 25 = 666.

It is not a de Polignac number, because 39500129925 - 2¹³ = 39500121733 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 an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3244965 + ... + 3257114.

Almost surely, 2^39500129925 is an apocalyptic number.

It is an amenable number.

39500129925 is a deficient number, since it is larger than the sum of its proper divisors (33869340795).

39500129925 is an equidigital number, since it uses as much as digits as its factorization.

39500129925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502104 (or 6502087 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The spelling of 39500129925 in words is "thirty-nine billion, five hundred million, one hundred twenty-nine thousand, nine hundred twenty-five".