225271774642 has 4 divisors (see below), whose sum is σ = 337907661966. Its totient is φ = 112635887320.

The previous prime is 225271774619. The next prime is 225271774643. The reversal of 225271774642 is 246477172522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 181306491601 + 43965283041 = 425801^2 + 209679^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (225271774643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56317943659 + ... + 56317943662.

Almost surely, 2^225271774642 is an apocalyptic number.

225271774642 is a deficient number, since it is larger than the sum of its proper divisors (112635887324).

225271774642 is a wasteful number, since it uses less digits than its factorization.

225271774642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112635887323.

The product of its digits is 2634240, while the sum is 49.

The spelling of 225271774642 in words is "two hundred twenty-five billion, two hundred seventy-one million, seven hundred seventy-four thousand, six hundred forty-two".