225787842 has 24 divisors (see below), whose sum is σ = 559094016. Its totient is φ = 64510776.

The previous prime is 225787777. The next prime is 225787873. The reversal of 225787842 is 248787522.

225787842 is a `hidden beast` number, since 2 + 2 + 578 + 78 + 4 + 2 = 666.

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, 895858 + ... + 896109.

It is an arithmetic number, because the mean of its divisors is an integer number (23295584).

Almost surely, 2^225787842 is an apocalyptic number.

225787842 is an abundant number, since it is smaller than the sum of its proper divisors (333306174).

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

225787842 is a wasteful number, since it uses less digits than its factorization.

225787842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791982 (or 1791979 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 225787842 is about 15026.2384514555. The cubic root of 225787842 is about 608.9292709886.

The spelling of 225787842 in words is "two hundred twenty-five million, seven hundred eighty-seven thousand, eight hundred forty-two".