2585165655 has 8 divisors (see below), whose sum is σ = 4136265072. Its totient is φ = 1378755008.

The previous prime is 2585165651. The next prime is 2585165701. The reversal of 2585165655 is 5565615852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2585165655 - 2² = 2585165651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585165651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86172174 + ... + 86172203.

It is an arithmetic number, because the mean of its divisors is an integer number (517033134).

Almost surely, 2^2585165655 is an apocalyptic number.

2585165655 is a deficient number, since it is larger than the sum of its proper divisors (1551099417).

2585165655 is a wasteful number, since it uses less digits than its factorization.

2585165655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172344385.

The product of its digits is 1800000, while the sum is 48.

The square root of 2585165655 is about 50844.5243364514. The cubic root of 2585165655 is about 1372.4487178957.

The spelling of 2585165655 in words is "two billion, five hundred eighty-five million, one hundred sixty-five thousand, six hundred fifty-five".