2605412020 has 24 divisors (see below), whose sum is σ = 5475703464. Its totient is φ = 1041338496.

The previous prime is 2605412003. The next prime is 2605412039. The reversal of 2605412020 is 202145062.

It can be written as a sum of positive squares in 4 ways, for example, as 10732176 + 2594679844 = 3276^2 + 50938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2605411982 and 2605412000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25467 + ... + 76546.

It is an arithmetic number, because the mean of its divisors is an integer number (228154311).

Almost surely, 2^2605412020 is an apocalyptic number.

2605412020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605412020 is an abundant number, since it is smaller than the sum of its proper divisors (2870291444).

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

2605412020 is a wasteful number, since it uses less digits than its factorization.

2605412020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103299 (or 103297 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2605412020 is about 51043.2367704087. The cubic root of 2605412020 is about 1376.0222956152.

Adding to 2605412020 its reverse (202145062), we get a palindrome (2807557082).

The spelling of 2605412020 in words is "two billion, six hundred five million, four hundred twelve thousand, twenty".