6254156563 has 2 divisors, whose sum is σ = 6254156564. Its totient is φ = 6254156562.

The previous prime is 6254156561. The next prime is 6254156593. The reversal of 6254156563 is 3656514526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6254156563 - 2¹ = 6254156561 is a prime.

It is a super-2 number, since 2×6254156563² = 78228948629031945938, which contains 22 as substring.

Together with 6254156561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6254156561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127078281 + 3127078282.

It is an arithmetic number, because the mean of its divisors is an integer number (3127078282).

Almost surely, 2^6254156563 is an apocalyptic number.

6254156563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6254156563 is an equidigital number, since it uses as much as digits as its factorization.

6254156563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 43.

The square root of 6254156563 is about 79083.2255475205. The cubic root of 6254156563 is about 1842.4240030710.

The spelling of 6254156563 in words is "six billion, two hundred fifty-four million, one hundred fifty-six thousand, five hundred sixty-three".