2256570643 has 2 divisors, whose sum is σ = 2256570644. Its totient is φ = 2256570642.

The previous prime is 2256570637. The next prime is 2256570661. The reversal of 2256570643 is 3460756522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2256570643 is a prime.

It is a super-2 number, since 2×2256570643² = 10184222133698866898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2256570596 and 2256570605.

It is not a weakly prime, because it can be changed into another prime (2256570143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128285321 + 1128285322.

It is an arithmetic number, because the mean of its divisors is an integer number (1128285322).

Almost surely, 2^2256570643 is an apocalyptic number.

2256570643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256570643 is an equidigital number, since it uses as much as digits as its factorization.

2256570643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 2256570643 is about 47503.3750695674. The cubic root of 2256570643 is about 1311.6450097594.

The spelling of 2256570643 in words is "two billion, two hundred fifty-six million, five hundred seventy thousand, six hundred forty-three".