225776257789 has 2 divisors, whose sum is σ = 225776257790. Its totient is φ = 225776257788.

The previous prime is 225776257739. The next prime is 225776257807. The reversal of 225776257789 is 987752677522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202012493764 + 23763764025 = 449458^2 + 154155^2 .

It is a cyclic number.

It is not a de Polignac number, because 225776257789 - 2¹⁷ = 225776126717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225776257739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112888128894 + 112888128895.

It is an arithmetic number, because the mean of its divisors is an integer number (112888128895).

Almost surely, 2^225776257789 is an apocalyptic number.

It is an amenable number.

225776257789 is a deficient number, since it is larger than the sum of its proper divisors (1).

225776257789 is an equidigital number, since it uses as much as digits as its factorization.

225776257789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207446400, while the sum is 67.

The spelling of 225776257789 in words is "two hundred twenty-five billion, seven hundred seventy-six million, two hundred fifty-seven thousand, seven hundred eighty-nine".