2257536281 has 96 divisors (see below), whose sum is σ = 3358494720. Its totient is φ = 1485993600.

The previous prime is 2257536277. The next prime is 2257536283. The reversal of 2257536281 is 1826357522.

It is not a de Polignac number, because 2257536281 - 2² = 2257536277 is a prime.

It is a super-2 number, since 2×2257536281² = 10192940120062621922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2257536283) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4126850 + ... + 4127396.

It is an arithmetic number, because the mean of its divisors is an integer number (34984320).

Almost surely, 2^2257536281 is an apocalyptic number.

It is an amenable number.

2257536281 is a deficient number, since it is larger than the sum of its proper divisors (1100958439).

2257536281 is a wasteful number, since it uses less digits than its factorization.

2257536281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 628 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 2257536281 is about 47513.5378708006. The cubic root of 2257536281 is about 1311.8320773414.

The spelling of 2257536281 in words is "two billion, two hundred fifty-seven million, five hundred thirty-six thousand, two hundred eighty-one".