225665403151 has 16 divisors (see below), whose sum is σ = 227929927680. Its totient is φ = 223411092480.

The previous prime is 225665403149. The next prime is 225665403167. The reversal of 225665403151 is 151304566522.

It is a cyclic number.

It is not a de Polignac number, because 225665403151 - 2¹ = 225665403149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225665406151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135696946 + ... + 135698608.

It is an arithmetic number, because the mean of its divisors is an integer number (14245620480).

Almost surely, 2^225665403151 is an apocalyptic number.

225665403151 is a deficient number, since it is larger than the sum of its proper divisors (2264524529).

225665403151 is a wasteful number, since it uses less digits than its factorization.

225665403151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966.

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 225665403151 its reverse (151304566522), we get a palindrome (376969969673).

The spelling of 225665403151 in words is "two hundred twenty-five billion, six hundred sixty-five million, four hundred three thousand, one hundred fifty-one".