1015255520 has 24 divisors (see below), whose sum is σ = 2398541544. Its totient is φ = 406102144.

The previous prime is 1015255511. The next prime is 1015255537. The reversal of 1015255520 is 255525101.

It is a self number, because there is not a number n which added to its sum of digits gives 1015255520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3172514 + ... + 3172833.

It is an arithmetic number, because the mean of its divisors is an integer number (99939231).

Almost surely, 2^1015255520 is an apocalyptic number.

1015255520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015255520 is an abundant number, since it is smaller than the sum of its proper divisors (1383286024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1015255520 is an equidigital number, since it uses as much as digits as its factorization.

1015255520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345362 (or 6345354 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 1015255520 is about 31863.0745534702. The cubic root of 1015255520 is about 1005.0595313036.

The spelling of 1015255520 in words is "one billion, fifteen million, two hundred fifty-five thousand, five hundred twenty".