2585798987 has 2 divisors, whose sum is σ = 2585798988. Its totient is φ = 2585798986.

The previous prime is 2585798933. The next prime is 2585799011. The reversal of 2585798987 is 7898975852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2585798987 - 2⁸ = 2585798731 is a prime.

It is not a weakly prime, because it can be changed into another prime (2585798387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292899493 + 1292899494.

It is an arithmetic number, because the mean of its divisors is an integer number (1292899494).

Almost surely, 2^2585798987 is an apocalyptic number.

2585798987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585798987 is an equidigital number, since it uses as much as digits as its factorization.

2585798987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 68.

The square root of 2585798987 is about 50850.7520790008. The cubic root of 2585798987 is about 1372.5607861130.

The spelling of 2585798987 in words is "two billion, five hundred eighty-five million, seven hundred ninety-eight thousand, nine hundred eighty-seven".