1005051256 has 16 divisors (see below), whose sum is σ = 2055786840. Its totient is φ = 456841440.

The previous prime is 1005051211. The next prime is 1005051269. The reversal of 1005051256 is 6521505001.

It is a self number, because there is not a number n which added to its sum of digits gives 1005051256.

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, 5710431 + ... + 5710606.

Almost surely, 2^1005051256 is an apocalyptic number.

It is an amenable number.

1005051256 is an abundant number, since it is smaller than the sum of its proper divisors (1050735584).

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

1005051256 is a wasteful number, since it uses less digits than its factorization.

1005051256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421054 (or 11421050 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1005051256 is about 31702.5433680012. The cubic root of 1005051256 is about 1001.6809249083.

Adding to 1005051256 its reverse (6521505001), we get a palindrome (7526556257).

It can be divided in two parts, 100505 and 1256, that added together give a square (101761 = 319²).

The spelling of 1005051256 in words is "one billion, five million, fifty-one thousand, two hundred fifty-six".