2585010161 has 4 divisors (see below), whose sum is σ = 2585115300. Its totient is φ = 2584905024.

The previous prime is 2585010151. The next prime is 2585010203. The reversal of 2585010161 is 1610105852.

2585010161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1790897761 + 794112400 = 42319^2 + 28180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2585010161 - 2¹⁴ = 2584993777 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2585010121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6245 + ... + 72173.

It is an arithmetic number, because the mean of its divisors is an integer number (646278825).

Almost surely, 2^2585010161 is an apocalyptic number.

It is an amenable number.

2585010161 is a deficient number, since it is larger than the sum of its proper divisors (105139).

2585010161 is an equidigital number, since it uses as much as digits as its factorization.

2585010161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105138.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 2585010161 is about 50842.9952009124. The cubic root of 2585010161 is about 1372.4212004045.

The spelling of 2585010161 in words is "two billion, five hundred eighty-five million, ten thousand, one hundred sixty-one".