1005601256 has 16 divisors (see below), whose sum is σ = 2056911840. Its totient is φ = 457091440.

The previous prime is 1005601253. The next prime is 1005601291. The reversal of 1005601256 is 6521065001.

1005601256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1005601256² = 2022467772137555072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005601253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5713556 + ... + 5713731.

It is an arithmetic number, because the mean of its divisors is an integer number (128556990).

Almost surely, 2^1005601256 is an apocalyptic number.

It is an amenable number.

1005601256 is an abundant number, since it is smaller than the sum of its proper divisors (1051310584).

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

1005601256 is a wasteful number, since it uses less digits than its factorization.

1005601256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11427304 (or 11427300 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1005601256 is about 31711.2165644902. The cubic root of 1005601256 is about 1001.8636101331.

Adding to 1005601256 its reverse (6521065001), we get a palindrome (7526666257).

The spelling of 1005601256 in words is "one billion, five million, six hundred one thousand, two hundred fifty-six".