2585055018 has 64 divisors (see below), whose sum is σ = 6434830080. Its totient is φ = 674099712.

The previous prime is 2585055017. The next prime is 2585055059. The reversal of 2585055018 is 8105505852.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2585055017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21996 + ... + 75192.

It is an arithmetic number, because the mean of its divisors is an integer number (100544220).

Almost surely, 2^2585055018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2585055018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217415040).

2585055018 is an abundant number, since it is smaller than the sum of its proper divisors (3849775062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2585055018 is a wasteful number, since it uses less digits than its factorization.

2585055018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53311.

The product of its (nonzero) digits is 80000, while the sum is 39.

The square root of 2585055018 is about 50843.4363315463. The cubic root of 2585055018 is about 1372.4291387797.

The spelling of 2585055018 in words is "two billion, five hundred eighty-five million, fifty-five thousand, eighteen".