205000415 has 4 divisors (see below), whose sum is σ = 246000504. Its totient is φ = 164000328.

The previous prime is 205000381. The next prime is 205000457. The reversal of 205000415 is 514000502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205000415 - 2⁶ = 205000351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205000393 and 205000402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20500037 + ... + 20500046.

It is an arithmetic number, because the mean of its divisors is an integer number (61500126).

Almost surely, 2^205000415 is an apocalyptic number.

205000415 is a deficient number, since it is larger than the sum of its proper divisors (41000089).

205000415 is an equidigital number, since it uses as much as digits as its factorization.

205000415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41000088.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 205000415 is about 14317.8355556977. The cubic root of 205000415 is about 589.6372518818.

Adding to 205000415 its reverse (514000502), we get a palindrome (719000917).

The spelling of 205000415 in words is "two hundred five million, four hundred fifteen", and thus it is an aban number.