2605404252 has 24 divisors (see below), whose sum is σ = 6631938432. Its totient is φ = 789516400.

The previous prime is 2605404239. The next prime is 2605404257. The reversal of 2605404252 is 2524045062.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605404257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9868824 + ... + 9869087.

It is an arithmetic number, because the mean of its divisors is an integer number (276330768).

Almost surely, 2^2605404252 is an apocalyptic number.

2605404252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2605404252 is an abundant number, since it is smaller than the sum of its proper divisors (4026534180).

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

2605404252 is a wasteful number, since it uses less digits than its factorization.

2605404252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19737929 (or 19737927 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2605404252 is about 51043.1606779988. The cubic root of 2605404252 is about 1376.0209280833.

The spelling of 2605404252 in words is "two billion, six hundred five million, four hundred four thousand, two hundred fifty-two".