225988266617 has 2 divisors, whose sum is σ = 225988266618. Its totient is φ = 225988266616.

The previous prime is 225988266613. The next prime is 225988266641. The reversal of 225988266617 is 716662889522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156427369081 + 69560897536 = 395509^2 + 263744^2 .

It is a cyclic number.

It is not a de Polignac number, because 225988266617 - 2² = 225988266613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225988266617.

It is not a weakly prime, because it can be changed into another prime (225988266611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112994133308 + 112994133309.

It is an arithmetic number, because the mean of its divisors is an integer number (112994133309).

Almost surely, 2^225988266617 is an apocalyptic number.

It is an amenable number.

225988266617 is a deficient number, since it is larger than the sum of its proper divisors (1).

225988266617 is an equidigital number, since it uses as much as digits as its factorization.

225988266617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 62.

The spelling of 225988266617 in words is "two hundred twenty-five billion, nine hundred eighty-eight million, two hundred sixty-six thousand, six hundred seventeen".