225165946 has 8 divisors (see below), whose sum is σ = 339900660. Its totient is φ = 111865728.

The previous prime is 225165943. The next prime is 225165953. The reversal of 225165946 is 649561522.

It can be written as a sum of positive squares in 2 ways, for example, as 179265321 + 45900625 = 13389^2 + 6775^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 225165899 and 225165908.

It is not an unprimeable number, because it can be changed into a prime (225165943) 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, 358231 + ... + 358858.

Almost surely, 2^225165946 is an apocalyptic number.

225165946 is a deficient number, since it is larger than the sum of its proper divisors (114734714).

225165946 is a wasteful number, since it uses less digits than its factorization.

225165946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717248.

The product of its digits is 129600, while the sum is 40.

The square root of 225165946 is about 15005.5305137806. The cubic root of 225165946 is about 608.3696912696.

The spelling of 225165946 in words is "two hundred twenty-five million, one hundred sixty-five thousand, nine hundred forty-six".