2605658852 has 6 divisors (see below), whose sum is σ = 4559902998. Its totient is φ = 1302829424.

The previous prime is 2605658791. The next prime is 2605658857. The reversal of 2605658852 is 2588565062.

It can be written as a sum of positive squares in only one way, i.e., 2320926976 + 284731876 = 48176^2 + 16874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2605658797 and 2605658806.

It is not an unprimeable number, because it can be changed into a prime (2605658857) 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 as a sum of consecutive naturals, namely, 325707353 + ... + 325707360.

It is an arithmetic number, because the mean of its divisors is an integer number (759983833).

Almost surely, 2^2605658852 is an apocalyptic number.

It is an amenable number.

2605658852 is a deficient number, since it is larger than the sum of its proper divisors (1954244146).

2605658852 is a wasteful number, since it uses less digits than its factorization.

2605658852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651414717 (or 651414715 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 47.

The square root of 2605658852 is about 51045.6545848910. The cubic root of 2605658852 is about 1376.0657481935.

The spelling of 2605658852 in words is "two billion, six hundred five million, six hundred fifty-eight thousand, eight hundred fifty-two".