225501221002 has 8 divisors (see below), whose sum is σ = 358148998116. Its totient is φ = 106118221632.

The previous prime is 225501220961. The next prime is 225501221003. The reversal of 225501221002 is 200122105522.

225501221002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 225196753401 + 304467601 = 474549^2 + 17449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (225501221003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3316194393 + ... + 3316194460.

Almost surely, 2^225501221002 is an apocalyptic number.

225501221002 is a deficient number, since it is larger than the sum of its proper divisors (132647777114).

225501221002 is a wasteful number, since it uses less digits than its factorization.

225501221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632388872.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 225501221002 its reverse (200122105522), we get a palindrome (425623326524).

The spelling of 225501221002 in words is "two hundred twenty-five billion, five hundred one million, two hundred twenty-one thousand, two".