205525097 has 2 divisors, whose sum is σ = 205525098. Its totient is φ = 205525096.

The previous prime is 205525091. The next prime is 205525123. The reversal of 205525097 is 790525502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135233641 + 70291456 = 11629^2 + 8384^2 .

It is a cyclic number.

It is not a de Polignac number, because 205525097 - 2²⁶ = 138416233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205525091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102762548 + 102762549.

It is an arithmetic number, because the mean of its divisors is an integer number (102762549).

Almost surely, 2^205525097 is an apocalyptic number.

It is an amenable number.

205525097 is a deficient number, since it is larger than the sum of its proper divisors (1).

205525097 is an equidigital number, since it uses as much as digits as its factorization.

205525097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 205525097 is about 14336.1465185035. The cubic root of 205525097 is about 590.1398662946.

The spelling of 205525097 in words is "two hundred five million, five hundred twenty-five thousand, ninety-seven".