2585358857 has 2 divisors, whose sum is σ = 2585358858. Its totient is φ = 2585358856.

The previous prime is 2585358833. The next prime is 2585358869. The reversal of 2585358857 is 7588535852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1626589561 + 958769296 = 40331^2 + 30964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2585358857 - 2²⁴ = 2568581641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2585358817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292679428 + 1292679429.

It is an arithmetic number, because the mean of its divisors is an integer number (1292679429).

Almost surely, 2^2585358857 is an apocalyptic number.

It is an amenable number.

2585358857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585358857 is an equidigital number, since it uses as much as digits as its factorization.

2585358857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440000, while the sum is 56.

The square root of 2585358857 is about 50846.4242302249. The cubic root of 2585358857 is about 1372.4829069662.

The spelling of 2585358857 in words is "two billion, five hundred eighty-five million, three hundred fifty-eight thousand, eight hundred fifty-seven".