225661752774 has 12 divisors (see below), whose sum is σ = 488933797716. Its totient is φ = 75220584252.

The previous prime is 225661752773. The next prime is 225661752839. The reversal of 225661752774 is 477257166522.

225661752774 is a `hidden beast` number, since 2 + 2 + 56 + 61 + 7 + 527 + 7 + 4 = 666.

225661752774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 225661752774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225661752773) 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 5 ways as a sum of consecutive naturals, for example, 6268382004 + ... + 6268382039.

It is an arithmetic number, because the mean of its divisors is an integer number (40744483143).

Almost surely, 2^225661752774 is an apocalyptic number.

225661752774 is an abundant number, since it is smaller than the sum of its proper divisors (263272044942).

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

225661752774 is a wasteful number, since it uses less digits than its factorization.

225661752774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12536764051 (or 12536764048 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 225661752774 in words is "two hundred twenty-five billion, six hundred sixty-one million, seven hundred fifty-two thousand, seven hundred seventy-four".