225171120424 has 8 divisors (see below), whose sum is σ = 422195850810. Its totient is φ = 112585560208.

The previous prime is 225171120373. The next prime is 225171120431. The reversal of 225171120424 is 424021171522.

It can be written as a sum of positive squares in only one way, i.e., 220777816900 + 4393303524 = 469870^2 + 66282^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14073195019 + ... + 14073195034.

Almost surely, 2^225171120424 is an apocalyptic number.

It is an amenable number.

225171120424 is a deficient number, since it is larger than the sum of its proper divisors (197024730386).

225171120424 is a wasteful number, since it uses less digits than its factorization.

225171120424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28146390059 (or 28146390055 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

Adding to 225171120424 its reverse (424021171522), we get a palindrome (649192291946).

The spelling of 225171120424 in words is "two hundred twenty-five billion, one hundred seventy-one million, one hundred twenty thousand, four hundred twenty-four".