225065221730 has 16 divisors (see below), whose sum is σ = 428947834680. Its totient is φ = 84730436352.

The previous prime is 225065221699. The next prime is 225065221757. The reversal of 225065221730 is 37122560522.

It can be written as a sum of positive squares in 4 ways, for example, as 155818878121 + 69246343609 = 394739^2 + 263147^2 .

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, 661956365 + ... + 661956704.

Almost surely, 2^225065221730 is an apocalyptic number.

225065221730 is a deficient number, since it is larger than the sum of its proper divisors (203882612950).

225065221730 is a wasteful number, since it uses less digits than its factorization.

225065221730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323913093.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 225065221730 in words is "two hundred twenty-five billion, sixty-five million, two hundred twenty-one thousand, seven hundred thirty".