2585213773 has 4 divisors (see below), whose sum is σ = 2594349088. Its totient is φ = 2576078460.

The previous prime is 2585213767. The next prime is 2585213809. The reversal of 2585213773 is 3773125852.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2585213773 - 2⁹ = 2585213261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585213173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4567233 + ... + 4567798.

It is an arithmetic number, because the mean of its divisors is an integer number (648587272).

Almost surely, 2^2585213773 is an apocalyptic number.

It is an amenable number.

2585213773 is a deficient number, since it is larger than the sum of its proper divisors (9135315).

2585213773 is an equidigital number, since it uses as much as digits as its factorization.

2585213773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135314.

The product of its digits is 352800, while the sum is 43.

The square root of 2585213773 is about 50844.9975218802. The cubic root of 2585213773 is about 1372.4572330274.

The spelling of 2585213773 in words is "two billion, five hundred eighty-five million, two hundred thirteen thousand, seven hundred seventy-three".