2531256424 has 32 divisors (see below), whose sum is σ = 4795619400. Its totient is φ = 1252454400.

The previous prime is 2531256407. The next prime is 2531256473. The reversal of 2531256424 is 4246521352.

It can be written as a sum of positive squares in 4 ways, for example, as 2229539524 + 301716900 = 47218^2 + 17370^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2531256424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046064 + ... + 1048480.

Almost surely, 2^2531256424 is an apocalyptic number.

It is an amenable number.

2531256424 is a deficient number, since it is larger than the sum of its proper divisors (2264362976).

2531256424 is a wasteful number, since it uses less digits than its factorization.

2531256424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733 (or 3729 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 2531256424 is about 50311.5933359300. The cubic root of 2531256424 is about 1362.8415975301.

Adding to 2531256424 its reverse (4246521352), we get a palindrome (6777777776).

The spelling of 2531256424 in words is "two billion, five hundred thirty-one million, two hundred fifty-six thousand, four hundred twenty-four".