205222415 has 16 divisors (see below), whose sum is σ = 257402880. Its totient is φ = 156871680.

The previous prime is 205222411. The next prime is 205222427. The reversal of 205222415 is 514222502.

It is not a de Polignac number, because 205222415 - 2² = 205222411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205222411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6770 + ... + 21360.

It is an arithmetic number, because the mean of its divisors is an integer number (16087680).

Almost surely, 2^205222415 is an apocalyptic number.

205222415 is a deficient number, since it is larger than the sum of its proper divisors (52180465).

205222415 is a wasteful number, since it uses less digits than its factorization.

205222415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14722.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 205222415 is about 14325.5860264074. The cubic root of 205222415 is about 589.8500193322.

Adding to 205222415 its reverse (514222502), we get a palindrome (719444917).

The spelling of 205222415 in words is "two hundred five million, two hundred twenty-two thousand, four hundred fifteen".