2605165612 has 48 divisors (see below), whose sum is σ = 5536738368. Its totient is φ = 1047029760.

The previous prime is 2605165579. The next prime is 2605165637. The reversal of 2605165612 is 2165615062.

2605165612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124018 + ... + 143494.

It is an arithmetic number, because the mean of its divisors is an integer number (115348716).

Almost surely, 2^2605165612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2605165612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768369184).

2605165612 is an abundant number, since it is smaller than the sum of its proper divisors (2931572756).

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

2605165612 is a wasteful number, since it uses less digits than its factorization.

2605165612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19786 (or 19784 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2605165612 is about 51040.8229949322. The cubic root of 2605165612 is about 1375.9789149408.

The spelling of 2605165612 in words is "two billion, six hundred five million, one hundred sixty-five thousand, six hundred twelve".