225520646056 has 8 divisors (see below), whose sum is σ = 422851211370. Its totient is φ = 112760323024.

The previous prime is 225520646033. The next prime is 225520646059. The reversal of 225520646056 is 650646025522.

It can be written as a sum of positive squares in only one way, i.e., 225520512100 + 133956 = 474890^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (225520646059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14095040371 + ... + 14095040386.

Almost surely, 2^225520646056 is an apocalyptic number.

It is an amenable number.

225520646056 is a deficient number, since it is larger than the sum of its proper divisors (197330565314).

225520646056 is a wasteful number, since it uses less digits than its factorization.

225520646056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28190080763 (or 28190080759 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 225520646056 in words is "two hundred twenty-five billion, five hundred twenty million, six hundred forty-six thousand, fifty-six".