205125499 has 2 divisors, whose sum is σ = 205125500. Its totient is φ = 205125498.

The previous prime is 205125457. The next prime is 205125517. The reversal of 205125499 is 994521502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205125499 - 2¹⁵ = 205092731 is a prime.

It is not a weakly prime, because it can be changed into another prime (205125449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102562749 + 102562750.

It is an arithmetic number, because the mean of its divisors is an integer number (102562750).

Almost surely, 2^205125499 is an apocalyptic number.

205125499 is a deficient number, since it is larger than the sum of its proper divisors (1).

205125499 is an equidigital number, since it uses as much as digits as its factorization.

205125499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 205125499 is about 14322.2030079175. The cubic root of 205125499 is about 589.7571527616.

The spelling of 205125499 in words is "two hundred five million, one hundred twenty-five thousand, four hundred ninety-nine".