8257485811 has 2 divisors, whose sum is σ = 8257485812. Its totient is φ = 8257485810.

The previous prime is 8257485799. The next prime is 8257485827. The reversal of 8257485811 is 1185847528.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8257485811 - 2¹⁷ = 8257354739 is a prime.

It is not a weakly prime, because it can be changed into another prime (8257485851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128742905 + 4128742906.

It is an arithmetic number, because the mean of its divisors is an integer number (4128742906).

Almost surely, 2^8257485811 is an apocalyptic number.

8257485811 is a deficient number, since it is larger than the sum of its proper divisors (1).

8257485811 is an equidigital number, since it uses as much as digits as its factorization.

8257485811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 716800, while the sum is 49.

The square root of 8257485811 is about 90870.7093127373. The cubic root of 8257485811 is about 2021.2309762443.

The spelling of 8257485811 in words is "eight billion, two hundred fifty-seven million, four hundred eighty-five thousand, eight hundred eleven".