2538256281 has 16 divisors (see below), whose sum is σ = 3909187008. Its totient is φ = 1447846400.

The previous prime is 2538256271. The next prime is 2538256297. The reversal of 2538256281 is 1826528352.

It is a happy number.

It is not a de Polignac number, because 2538256281 - 2²⁶ = 2471147417 is a prime.

It is a super-2 number, since 2×2538256281² = 12885489896071901922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2538256271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2261700 + ... + 2262821.

It is an arithmetic number, because the mean of its divisors is an integer number (244324188).

Almost surely, 2^2538256281 is an apocalyptic number.

It is an amenable number.

2538256281 is a deficient number, since it is larger than the sum of its proper divisors (1370930727).

2538256281 is a wasteful number, since it uses less digits than its factorization.

2538256281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524552.

The product of its digits is 230400, while the sum is 42.

The square root of 2538256281 is about 50381.1103589431. The cubic root of 2538256281 is about 1364.0966944191.

The spelling of 2538256281 in words is "two billion, five hundred thirty-eight million, two hundred fifty-six thousand, two hundred eighty-one".