225661252650 has 48 divisors (see below), whose sum is σ = 559669756224. Its totient is φ = 60173124480.

The previous prime is 225661252567. The next prime is 225661252667. The reversal of 225661252650 is 56252166522.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4454262 + ... + 4504638.

It is an arithmetic number, because the mean of its divisors is an integer number (11659786588).

Almost surely, 2^225661252650 is an apocalyptic number.

225661252650 is an abundant number, since it is smaller than the sum of its proper divisors (334008503574).

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

225661252650 is a wasteful number, since it uses less digits than its factorization.

225661252650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80255 (or 80250 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 225661252650 in words is "two hundred twenty-five billion, six hundred sixty-one million, two hundred fifty-two thousand, six hundred fifty".