205435249 has 2 divisors, whose sum is σ = 205435250. Its totient is φ = 205435248.

The previous prime is 205435187. The next prime is 205435253. The reversal of 205435249 is 942534502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160478224 + 44957025 = 12668^2 + 6705^2 .

It is a cyclic number.

It is not a de Polignac number, because 205435249 - 2⁷ = 205435121 is a prime.

It is not a weakly prime, because it can be changed into another prime (205435649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102717624 + 102717625.

It is an arithmetic number, because the mean of its divisors is an integer number (102717625).

Almost surely, 2^205435249 is an apocalyptic number.

It is an amenable number.

205435249 is a deficient number, since it is larger than the sum of its proper divisors (1).

205435249 is an equidigital number, since it uses as much as digits as its factorization.

205435249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 205435249 is about 14333.0125584261. The cubic root of 205435249 is about 590.0538579581.

The spelling of 205435249 in words is "two hundred five million, four hundred thirty-five thousand, two hundred forty-nine".