2585840039 has 2 divisors, whose sum is σ = 2585840040. Its totient is φ = 2585840038.

The previous prime is 2585840011. The next prime is 2585840057. The reversal of 2585840039 is 9300485852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2585840039 - 2¹² = 2585835943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2585840069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292920019 + 1292920020.

It is an arithmetic number, because the mean of its divisors is an integer number (1292920020).

Almost surely, 2^2585840039 is an apocalyptic number.

2585840039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585840039 is an equidigital number, since it uses as much as digits as its factorization.

2585840039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 2585840039 is about 50851.1557292457. The cubic root of 2585840039 is about 1372.5680496406.

The spelling of 2585840039 in words is "two billion, five hundred eighty-five million, eight hundred forty thousand, thirty-nine".