225168975 has 36 divisors (see below), whose sum is σ = 404173536. Its totient is φ = 119831040.

The previous prime is 225168973. The next prime is 225168991. The reversal of 225168975 is 579861522.

It is not a de Polignac number, because 225168975 - 2¹ = 225168973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 225168975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225168971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 150682 + ... + 152168.

Almost surely, 2^225168975 is an apocalyptic number.

225168975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

225168975 is a deficient number, since it is larger than the sum of its proper divisors (179004561).

225168975 is a wasteful number, since it uses less digits than its factorization.

225168975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2168 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 225168975 is about 15005.6314428950. The cubic root of 225168975 is about 608.3724192480.

The spelling of 225168975 in words is "two hundred twenty-five million, one hundred sixty-eight thousand, nine hundred seventy-five".