225612277524 has 144 divisors (see below), whose sum is σ = 620168640000. Its totient is φ = 68893182720.

The previous prime is 225612277523. The next prime is 225612277529. The reversal of 225612277524 is 425772216522.

225612277524 is a `hidden beast` number, since 2 + 2 + 5 + 612 + 2 + 7 + 7 + 5 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 225612277524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225612277523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32841562 + ... + 32848430.

Almost surely, 2^225612277524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225612277524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310084320000).

225612277524 is an abundant number, since it is smaller than the sum of its proper divisors (394556362476).

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

225612277524 is a wasteful number, since it uses less digits than its factorization.

225612277524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478 (or 8473 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The spelling of 225612277524 in words is "two hundred twenty-five billion, six hundred twelve million, two hundred seventy-seven thousand, five hundred twenty-four".