225032557644 has 84 divisors (see below), whose sum is σ = 592052007904. Its totient is φ = 74806107552.

The previous prime is 225032557627. The next prime is 225032557649. The reversal of 225032557644 is 446755230522.

225032557644 is a `hidden beast` number, since 2 + 2 + 5 + 0 + 32 + 5 + 576 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 225032557644.

It is not an unprimeable number, because it can be changed into a prime (225032557649) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 965034 + ... + 1175310.

Almost surely, 2^225032557644 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 225032557644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296026003952).

225032557644 is an abundant number, since it is smaller than the sum of its proper divisors (367019450260).

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

225032557644 is a wasteful number, since it uses less digits than its factorization.

225032557644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210666 (or 210649 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 45.

The spelling of 225032557644 in words is "two hundred twenty-five billion, thirty-two million, five hundred fifty-seven thousand, six hundred forty-four".