23825813566 has 16 divisors (see below), whose sum is σ = 35911436400. Its totient is φ = 11855383488.

The previous prime is 23825813521. The next prime is 23825813567. The reversal of 23825813566 is 66531852832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23825813567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085125 + ... + 1106863.

It is an arithmetic number, because the mean of its divisors is an integer number (2244464775).

Almost surely, 2^23825813566 is an apocalyptic number.

23825813566 is a deficient number, since it is larger than the sum of its proper divisors (12085622834).

23825813566 is a wasteful number, since it uses less digits than its factorization.

23825813566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24363.

The product of its digits is 2073600, while the sum is 49.

The spelling of 23825813566 in words is "twenty-three billion, eight hundred twenty-five million, eight hundred thirteen thousand, five hundred sixty-six".