56021801825 has 12 divisors (see below), whose sum is σ = 75782219568. Its totient is φ = 40743128400.

The previous prime is 56021801813. The next prime is 56021801893. The reversal of 56021801825 is 52810812065.

It is not a de Polignac number, because 56021801825 - 2¹⁶ = 56021736289 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 101857547 + ... + 101858096.

It is an arithmetic number, because the mean of its divisors is an integer number (6315184964).

Almost surely, 2^56021801825 is an apocalyptic number.

56021801825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56021801825 is a deficient number, since it is larger than the sum of its proper divisors (19760417743).

56021801825 is a wasteful number, since it uses less digits than its factorization.

56021801825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203715664 (or 203715659 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 56021801825 in words is "fifty-six billion, twenty-one million, eight hundred one thousand, eight hundred twenty-five".