663043562525 has 12 divisors (see below), whose sum is σ = 834445273632. Its totient is φ = 522517910640.

The previous prime is 663043562443. The next prime is 663043562557. The reversal of 663043562525 is 525265340366.

663043562525 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 663043562525 - 2¹⁰ = 663043561501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663043562525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197921777 + ... + 197925126.

It is an arithmetic number, because the mean of its divisors is an integer number (69537106136).

Almost surely, 2^663043562525 is an apocalyptic number.

It is an amenable number.

663043562525 is a deficient number, since it is larger than the sum of its proper divisors (171401711107).

663043562525 is a wasteful number, since it uses less digits than its factorization.

663043562525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395846980 (or 395846975 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 663043562525 in words is "six hundred sixty-three billion, forty-three million, five hundred sixty-two thousand, five hundred twenty-five".