225740305 has 16 divisors (see below), whose sum is σ = 315907200. Its totient is φ = 154792176.

The previous prime is 225740299. The next prime is 225740351. The reversal of 225740305 is 503047522.

It is not a de Polignac number, because 225740305 - 2⁹ = 225739793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64099 + ... + 67528.

It is an arithmetic number, because the mean of its divisors is an integer number (19744200).

Almost surely, 2^225740305 is an apocalyptic number.

It is an amenable number.

225740305 is a deficient number, since it is larger than the sum of its proper divisors (90166895).

225740305 is an equidigital number, since it uses as much as digits as its factorization.

225740305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131653 (or 131639 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 225740305 is about 15024.6565684544. The cubic root of 225740305 is about 608.8865336676.

Adding to 225740305 its reverse (503047522), we get a palindrome (728787827).

The spelling of 225740305 in words is "two hundred twenty-five million, seven hundred forty thousand, three hundred five".