1200515205 has 32 divisors (see below), whose sum is σ = 1950681600. Its totient is φ = 630369792.

The previous prime is 1200515203. The next prime is 1200515213. The reversal of 1200515205 is 5025150021.

It is not a de Polignac number, because 1200515205 - 2¹ = 1200515203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200515203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483427 + ... + 485903.

It is an arithmetic number, because the mean of its divisors is an integer number (60958800).

Almost surely, 2^1200515205 is an apocalyptic number.

1200515205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200515205 is a deficient number, since it is larger than the sum of its proper divisors (750166395).

1200515205 is a wasteful number, since it uses less digits than its factorization.

1200515205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1200515205 is about 34648.4516970095. The cubic root of 1200515205 is about 1062.8106271478.

Adding to 1200515205 its reverse (5025150021), we get a palindrome (6225665226).

The spelling of 1200515205 in words is "one billion, two hundred million, five hundred fifteen thousand, two hundred five".