56431825785 has 24 divisors (see below), whose sum is σ = 97897662720. Its totient is φ = 30071589792.

The previous prime is 56431825781. The next prime is 56431825837. The reversal of 56431825785 is 58752813465.

56431825785 is a `hidden beast` number, since 5 + 6 + 431 + 82 + 57 + 85 = 666.

It is not a de Polignac number, because 56431825785 - 2² = 56431825781 is a prime.

It is a super-2 number, since 2×56431825785² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56431825781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474825 + ... + 581654.

It is an arithmetic number, because the mean of its divisors is an integer number (4079069280).

Almost surely, 2^56431825785 is an apocalyptic number.

It is an amenable number.

56431825785 is a deficient number, since it is larger than the sum of its proper divisors (41465836935).

56431825785 is a wasteful number, since it uses less digits than its factorization.

56431825785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057677 (or 1057674 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 56431825785 in words is "fifty-six billion, four hundred thirty-one million, eight hundred twenty-five thousand, seven hundred eighty-five".