2564541403 has 2 divisors, whose sum is σ = 2564541404. Its totient is φ = 2564541402.

The previous prime is 2564541401. The next prime is 2564541407. The reversal of 2564541403 is 3041454652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564541403 - 2¹ = 2564541401 is a prime.

Together with 2564541401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2564541401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282270701 + 1282270702.

It is an arithmetic number, because the mean of its divisors is an integer number (1282270702).

Almost surely, 2^2564541403 is an apocalyptic number.

2564541403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564541403 is an equidigital number, since it uses as much as digits as its factorization.

2564541403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2564541403 is about 50641.3013557116. The cubic root of 2564541403 is about 1368.7892055018.

The spelling of 2564541403 in words is "two billion, five hundred sixty-four million, five hundred forty-one thousand, four hundred three".