225385306 has 4 divisors (see below), whose sum is σ = 338077962. Its totient is φ = 112692652.

The previous prime is 225385289. The next prime is 225385313. The reversal of 225385306 is 603583522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603583522 = 2 ⋅301791761.

It can be written as a sum of positive squares in only one way, i.e., 210105025 + 15280281 = 14495^2 + 3909^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56346325 + ... + 56346328.

Almost surely, 2^225385306 is an apocalyptic number.

225385306 is a deficient number, since it is larger than the sum of its proper divisors (112692656).

225385306 is a wasteful number, since it uses less digits than its factorization.

225385306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112692655.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 225385306 is about 15012.8380394914. The cubic root of 225385306 is about 608.5671880704.

The spelling of 225385306 in words is "two hundred twenty-five million, three hundred eighty-five thousand, three hundred six".