2531126256 has 80 divisors (see below), whose sum is σ = 6657097728. Its totient is φ = 828576000.

The previous prime is 2531126239. The next prime is 2531126261. The reversal of 2531126256 is 6526211352.

It is a congruent 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, 613641 + ... + 617751.

Almost surely, 2^2531126256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531126256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3328548864).

2531126256 is an abundant number, since it is smaller than the sum of its proper divisors (4125971472).

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

2531126256 is a wasteful number, since it uses less digits than its factorization.

2531126256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350 (or 4344 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 2531126256 is about 50310.2997009559. The cubic root of 2531126256 is about 1362.8182360873.

The spelling of 2531126256 in words is "two billion, five hundred thirty-one million, one hundred twenty-six thousand, two hundred fifty-six".