225155420272 has 20 divisors (see below), whose sum is σ = 436608044136. Its totient is φ = 112482376640.

The previous prime is 225155420267. The next prime is 225155420293. The reversal of 225155420272 is 272024551522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5938858 + ... + 5976649.

Almost surely, 2^225155420272 is an apocalyptic number.

It is an amenable number.

225155420272 is a deficient number, since it is larger than the sum of its proper divisors (211452623864).

225155420272 is a wasteful number, since it uses less digits than its factorization.

225155420272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11916696 (or 11916690 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 37.

Adding to 225155420272 its reverse (272024551522), we get a palindrome (497179971794).

The spelling of 225155420272 in words is "two hundred twenty-five billion, one hundred fifty-five million, four hundred twenty thousand, two hundred seventy-two".