4025500665021 has 64 divisors (see below), whose sum is σ = 6600503347200. Its totient is φ = 2404462320000.

The previous prime is 4025500665013. The next prime is 4025500665023. The reversal of 4025500665021 is 1205660055204.

4025500665021 is a `hidden beast` number, since 4 + 0 + 25 + 500 + 66 + 50 + 21 = 666.

It is not a de Polignac number, because 4025500665021 - 2³ = 4025500665013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025500665023) 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 63 ways as a sum of consecutive naturals, for example, 5299896 + ... + 6011646.

It is an arithmetic number, because the mean of its divisors is an integer number (103132864800).

Almost surely, 2^{4025500665021} is an apocalyptic number.

It is an amenable number.

4025500665021 is a deficient number, since it is larger than the sum of its proper divisors (2575002682179).

4025500665021 is a wasteful number, since it uses less digits than its factorization.

4025500665021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712047 (or 712041 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 4025500665021 in words is "four trillion, twenty-five billion, five hundred million, six hundred sixty-five thousand, twenty-one".