1015220505 has 16 divisors (see below), whose sum is σ = 1749303360. Its totient is φ = 499800768.

The previous prime is 1015220461. The next prime is 1015220543. The reversal of 1015220505 is 5050225101.

It is not a de Polignac number, because 1015220505 - 2¹⁶ = 1015154969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2602935 + ... + 2603324.

It is an arithmetic number, because the mean of its divisors is an integer number (109331460).

Almost surely, 2^1015220505 is an apocalyptic number.

1015220505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015220505 is a deficient number, since it is larger than the sum of its proper divisors (734082855).

1015220505 is a wasteful number, since it uses less digits than its factorization.

1015220505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206280.

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

The square root of 1015220505 is about 31862.5250882600. The cubic root of 1015220505 is about 1005.0479767201.

Adding to 1015220505 its reverse (5050225101), we get a palindrome (6065445606).

The spelling of 1015220505 in words is "one billion, fifteen million, two hundred twenty thousand, five hundred five".