2605401222 has 32 divisors (see below), whose sum is σ = 5444651520. Its totient is φ = 829593600.

The previous prime is 2605401221. The next prime is 2605401241. The reversal of 2605401222 is 2221045062.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2605401192 and 2605401201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605401221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93847 + ... + 118397.

It is an arithmetic number, because the mean of its divisors is an integer number (170145360).

Almost surely, 2^2605401222 is an apocalyptic number.

2605401222 is an abundant number, since it is smaller than the sum of its proper divisors (2839250298).

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

2605401222 is a wasteful number, since it uses less digits than its factorization.

2605401222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25348.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2605401222 is about 51043.1309972263. The cubic root of 2605401222 is about 1376.0203946606.

Adding to 2605401222 its reverse (2221045062), we get a palindrome (4826446284).

The spelling of 2605401222 in words is "two billion, six hundred five million, four hundred one thousand, two hundred twenty-two".