225655655677 has 2 divisors, whose sum is σ = 225655655678. Its totient is φ = 225655655676.

The previous prime is 225655655647. The next prime is 225655655689. The reversal of 225655655677 is 776556556522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219163486201 + 6492169476 = 468149^2 + 80574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225655655677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225655655647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112827827838 + 112827827839.

It is an arithmetic number, because the mean of its divisors is an integer number (112827827839).

Almost surely, 2^225655655677 is an apocalyptic number.

It is an amenable number.

225655655677 is a deficient number, since it is larger than the sum of its proper divisors (1).

225655655677 is an equidigital number, since it uses as much as digits as its factorization.

225655655677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300000, while the sum is 61.

The spelling of 225655655677 in words is "two hundred twenty-five billion, six hundred fifty-five million, six hundred fifty-five thousand, six hundred seventy-seven".