636042125 has 16 divisors (see below), whose sum is σ = 807243840. Its totient is φ = 500203600.

The previous prime is 636042103. The next prime is 636042163. The reversal of 636042125 is 521240636.

It is not a de Polignac number, because 636042125 - 2⁸ = 636041869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35747 + ... + 50496.

It is an arithmetic number, because the mean of its divisors is an integer number (50452740).

Almost surely, 2^636042125 is an apocalyptic number.

It is an amenable number.

636042125 is a deficient number, since it is larger than the sum of its proper divisors (171201715).

636042125 is an equidigital number, since it uses as much as digits as its factorization.

636042125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86317 (or 86307 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 636042125 is about 25219.8755944592. The cubic root of 636042125 is about 859.9937465743.

The spelling of 636042125 in words is "six hundred thirty-six million, forty-two thousand, one hundred twenty-five".