2531256426 has 32 divisors (see below), whose sum is σ = 5627531520. Its totient is φ = 843374592.

The previous prime is 2531256407. The next prime is 2531256473. The reversal of 2531256426 is 6246521352.

2531256426 is a `hidden beast` number, since 2 + 5 + 3 + 1 + 2 + 5 + 642 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128106 + ... + 146538.

It is an arithmetic number, because the mean of its divisors is an integer number (175860360).

Almost surely, 2^2531256426 is an apocalyptic number.

2531256426 is an abundant number, since it is smaller than the sum of its proper divisors (3096275094).

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

2531256426 is a wasteful number, since it uses less digits than its factorization.

2531256426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20987 (or 20981 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 2531256426 is about 50311.5933558062. The cubic root of 2531256426 is about 1362.8415978890.

Adding to 2531256426 its reverse (6246521352), we get a palindrome (8777777778).

The spelling of 2531256426 in words is "two billion, five hundred thirty-one million, two hundred fifty-six thousand, four hundred twenty-six".