2585809342 has 4 divisors (see below), whose sum is σ = 3878714016. Its totient is φ = 1292904670.

The previous prime is 2585809333. The next prime is 2585809357. The reversal of 2585809342 is 2439085852.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2585809292 and 2585809301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646452334 + ... + 646452337.

It is an arithmetic number, because the mean of its divisors is an integer number (969678504).

Almost surely, 2^2585809342 is an apocalyptic number.

2585809342 is a deficient number, since it is larger than the sum of its proper divisors (1292904674).

2585809342 is a wasteful number, since it uses less digits than its factorization.

2585809342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292904673.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 2585809342 is about 50850.8538964686. The cubic root of 2585809342 is about 1372.5626182802.

The spelling of 2585809342 in words is "two billion, five hundred eighty-five million, eight hundred nine thousand, three hundred forty-two".