206525369 has 2 divisors, whose sum is σ = 206525370. Its totient is φ = 206525368.

The previous prime is 206525359. The next prime is 206525381. The reversal of 206525369 is 963525602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194965369 + 11560000 = 13963^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 206525369 - 2⁴ = 206525353 is a prime.

It is a super-2 number, since 2×206525369² = 85305456081172322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (206525309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103262684 + 103262685.

It is an arithmetic number, because the mean of its divisors is an integer number (103262685).

Almost surely, 2^206525369 is an apocalyptic number.

It is an amenable number.

206525369 is a deficient number, since it is larger than the sum of its proper divisors (1).

206525369 is an equidigital number, since it uses as much as digits as its factorization.

206525369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 206525369 is about 14370.9905364940. The cubic root of 206525369 is about 591.0957030396.

The spelling of 206525369 in words is "two hundred six million, five hundred twenty-five thousand, three hundred sixty-nine".