225661447212 has 12 divisors (see below), whose sum is σ = 526543376856. Its totient is φ = 75220482400.

The previous prime is 225661447201. The next prime is 225661447223. The reversal of 225661447212 is 212744166522.

225661447212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225661447201) and next prime (225661447223).

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 9402560289 + ... + 9402560312.

It is an arithmetic number, because the mean of its divisors is an integer number (43878614738).

Almost surely, 2^225661447212 is an apocalyptic number.

It is an amenable number.

225661447212 is an abundant number, since it is smaller than the sum of its proper divisors (300881929644).

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

225661447212 is a wasteful number, since it uses less digits than its factorization.

225661447212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18805120608 (or 18805120606 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The spelling of 225661447212 in words is "two hundred twenty-five billion, six hundred sixty-one million, four hundred forty-seven thousand, two hundred twelve".