2585399 has 2 divisors, whose sum is σ = 2585400. Its totient is φ = 2585398.

The previous prime is 2585389. The next prime is 2585413. The reversal of 2585399 is 9935852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2585399 - 2²⁰ = 1536823 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 5⁶ + 8⁷ + 5⁸ + 3 + 9⁴ + 9⁵ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2585389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292699 + 1292700.

It is an arithmetic number, because the mean of its divisors is an integer number (1292700).

2^2585399 is an apocalyptic number.

2585399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585399 is an equidigital number, since it uses as much as digits as its factorization.

2585399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 2585399 is about 1607.9175973911. The cubic root of 2585399 is about 137.2490010467.

It can be divided in two parts, 25853 and 99, that added together give a palindrome (25952).

The spelling of 2585399 in words is "two million, five hundred eighty-five thousand, three hundred ninety-nine".