2257554681 has 6 divisors (see below), whose sum is σ = 3260912330. Its totient is φ = 1505036448.

The previous prime is 2257554679. The next prime is 2257554683. The reversal of 2257554681 is 1864557522.

2257554681 is a `hidden beast` number, since 2 + 25 + 7 + 5 + 546 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (2257554679) and next prime (2257554683).

It can be written as a sum of positive squares in only one way, i.e., 2252451600 + 5103081 = 47460^2 + 2259^2 .

It is not a de Polignac number, because 2257554681 - 2¹ = 2257554679 is a prime.

It is a super-2 number, since 2×2257554681² = 10193106275410023522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2257554683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125419696 + ... + 125419713.

Almost surely, 2^2257554681 is an apocalyptic number.

It is an amenable number.

2257554681 is a deficient number, since it is larger than the sum of its proper divisors (1003357649).

2257554681 is a wasteful number, since it uses less digits than its factorization.

2257554681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250839415 (or 250839412 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 2257554681 is about 47513.7314994308. The cubic root of 2257554681 is about 1311.8356413512.

The spelling of 2257554681 in words is "two billion, two hundred fifty-seven million, five hundred fifty-four thousand, six hundred eighty-one".