2257567643 has 2 divisors, whose sum is σ = 2257567644. Its totient is φ = 2257567642.

The previous prime is 2257567619. The next prime is 2257567657. The reversal of 2257567643 is 3467657522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2257567643 - 2¹⁴ = 2257551259 is a prime.

It is a super-2 number, since 2×2257567643² = 10193223325441150898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2257567673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128783821 + 1128783822.

It is an arithmetic number, because the mean of its divisors is an integer number (1128783822).

Almost surely, 2^2257567643 is an apocalyptic number.

2257567643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257567643 is an equidigital number, since it uses as much as digits as its factorization.

2257567643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 47.

The square root of 2257567643 is about 47513.8679019084. The cubic root of 2257567643 is about 1311.8381520296.

The spelling of 2257567643 in words is "two billion, two hundred fifty-seven million, five hundred sixty-seven thousand, six hundred forty-three".