4025663610021 has 20 divisors (see below), whose sum is σ = 6014942524800. Its totient is φ = 2683196964936.

The previous prime is 4025663610011. The next prime is 4025663610029. The reversal of 4025663610021 is 1200163665204.

4025663610021 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 6 + 636 + 10 + 0 + 2 + 1 = 666.

4025663610021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4025663610021 - 2¹⁹ = 4025663085733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025663610029) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4980951 + ... + 5732468.

It is an arithmetic number, because the mean of its divisors is an integer number (300747126240).

Almost surely, 2^{4025663610021} is an apocalyptic number.

It is an amenable number.

4025663610021 is a deficient number, since it is larger than the sum of its proper divisors (1989278914779).

4025663610021 is a wasteful number, since it uses less digits than its factorization.

4025663610021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10718070 (or 10718061 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 4025663610021 in words is "four trillion, twenty-five billion, six hundred sixty-three million, six hundred ten thousand, twenty-one".