225772105729 has 2 divisors, whose sum is σ = 225772105730. Its totient is φ = 225772105728.

The previous prime is 225772105697. The next prime is 225772105739. The reversal of 225772105729 is 927501277522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212568946704 + 13203159025 = 461052^2 + 114905^2 .

It is a cyclic number.

It is not a de Polignac number, because 225772105729 - 2⁵ = 225772105697 is a prime.

It is not a weakly prime, because it can be changed into another prime (225772105739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112886052864 + 112886052865.

It is an arithmetic number, because the mean of its divisors is an integer number (112886052865).

Almost surely, 2^225772105729 is an apocalyptic number.

It is an amenable number.

225772105729 is a deficient number, since it is larger than the sum of its proper divisors (1).

225772105729 is an equidigital number, since it uses as much as digits as its factorization.

225772105729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 225772105729 in words is "two hundred twenty-five billion, seven hundred seventy-two million, one hundred five thousand, seven hundred twenty-nine".