56255285205 has 54 divisors (see below), whose sum is σ = 113451485238. Its totient is φ = 25711610400.

The previous prime is 56255285179. The next prime is 56255285257. The reversal of 56255285205 is 50258255265.

56255285205 is a `hidden beast` number, since 56 + 2 + 55 + 28 + 520 + 5 = 666.

56255285205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45004228164 + 11251057041 = 212142^2 + 106071^2 .

It is not a de Polignac number, because 56255285205 - 2⁵ = 56255285173 is a prime.

It is a super-2 number, since 2×56255285205² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 11134930 + ... + 11139980.

Almost surely, 2^56255285205 is an apocalyptic number.

It is an amenable number.

56255285205 is an abundant number, since it is smaller than the sum of its proper divisors (57196200033).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56255285205 is an frugal number, since it uses more digits than its factorization.

56255285205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127 (or 5066 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

Multiplying 56255285205 by its sum of digits (45), we get a square (2531487834225 = 1591065²).

56255285205 divided by its sum of digits (45) gives a square (1250117449 = 35357²).

The spelling of 56255285205 in words is "fifty-six billion, two hundred fifty-five million, two hundred eighty-five thousand, two hundred five".