225171168 has 24 divisors (see below), whose sum is σ = 591074568. Its totient is φ = 75057024.

The previous prime is 225171161. The next prime is 225171169. The reversal of 225171168 is 861171522.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225171161) 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, 1172671 + ... + 1172862.

It is an arithmetic number, because the mean of its divisors is an integer number (24628107).

Almost surely, 2^225171168 is an apocalyptic number.

It is an amenable number.

225171168 is an abundant number, since it is smaller than the sum of its proper divisors (365903400).

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

225171168 is a wasteful number, since it uses less digits than its factorization.

225171168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345546 (or 2345538 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 225171168 is about 15005.7045152835. The cubic root of 225171168 is about 608.3743942927.

The spelling of 225171168 in words is "two hundred twenty-five million, one hundred seventy-one thousand, one hundred sixty-eight".