1255288256 has 56 divisors (see below), whose sum is σ = 2551364976. Its totient is φ = 612587520.

The previous prime is 1255288249. The next prime is 1255288259. The reversal of 1255288256 is 6528825521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255288259) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 533675 + ... + 536021.

Almost surely, 2^1255288256 is an apocalyptic number.

1255288256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255288256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275682488).

1255288256 is an abundant number, since it is smaller than the sum of its proper divisors (1296076720).

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

1255288256 is a wasteful number, since it uses less digits than its factorization.

1255288256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2547 counting only the distinct ones).

The product of its digits is 384000, while the sum is 44.

The square root of 1255288256 is about 35430.0473609619. The cubic root of 1255288256 is about 1078.7343014320.

The spelling of 1255288256 in words is "one billion, two hundred fifty-five million, two hundred eighty-eight thousand, two hundred fifty-six".