225168745 has 8 divisors (see below), whose sum is σ = 270294984. Its totient is φ = 180073344.

The previous prime is 225168743. The next prime is 225168773. The reversal of 225168745 is 547861522.

It can be written as a sum of positive squares in 4 ways, for example, as 59351616 + 165817129 = 7704^2 + 12877^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 225168745 - 2¹ = 225168743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225168698 and 225168707.

It is not an unprimeable number, because it can be changed into a prime (225168743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13837 + ... + 25333.

It is an arithmetic number, because the mean of its divisors is an integer number (33786873).

Almost surely, 2^225168745 is an apocalyptic number.

It is an amenable number.

225168745 is a deficient number, since it is larger than the sum of its proper divisors (45126239).

225168745 is a wasteful number, since it uses less digits than its factorization.

225168745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419.

The product of its digits is 134400, while the sum is 40.

The square root of 225168745 is about 15005.6237791036. The cubic root of 225168745 is about 608.3722121062.

The spelling of 225168745 in words is "two hundred twenty-five million, one hundred sixty-eight thousand, seven hundred forty-five".