225166745 has 8 divisors (see below), whose sum is σ = 270284040. Its totient is φ = 180077440.

The previous prime is 225166729. The next prime is 225166763. The reversal of 225166745 is 547661522.

It can be written as a sum of positive squares in 4 ways, for example, as 66129424 + 159037321 = 8132^2 + 12611^2 .

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

It is not a de Polignac number, because 225166745 - 2⁴ = 225166729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225166699 and 225166708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20621 + ... + 29589.

It is an arithmetic number, because the mean of its divisors is an integer number (33785505).

Almost surely, 2^225166745 is an apocalyptic number.

It is an amenable number.

225166745 is a deficient number, since it is larger than the sum of its proper divisors (45117295).

225166745 is an equidigital number, since it uses as much as digits as its factorization.

225166745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13995.

The product of its digits is 100800, while the sum is 38.

The square root of 225166745 is about 15005.5571372742. The cubic root of 225166745 is about 608.3704108674.

The spelling of 225166745 in words is "two hundred twenty-five million, one hundred sixty-six thousand, seven hundred forty-five".