225531412812 has 72 divisors (see below), whose sum is σ = 578249092512. Its totient is φ = 74102112000.

The previous prime is 225531412787. The next prime is 225531412819. The reversal of 225531412812 is 218214135522.

225531412812 is a `hidden beast` number, since 2 + 2 + 5 + 531 + 41 + 2 + 81 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (225531412819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19105312 + ... + 19117112.

It is an arithmetic number, because the mean of its divisors is an integer number (8031237396).

Almost surely, 2^225531412812 is an apocalyptic number.

It is an amenable number.

225531412812 is an abundant number, since it is smaller than the sum of its proper divisors (352717679700).

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

225531412812 is a wasteful number, since it uses less digits than its factorization.

225531412812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19359 (or 19354 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The spelling of 225531412812 in words is "two hundred twenty-five billion, five hundred thirty-one million, four hundred twelve thousand, eight hundred twelve".