2625666666 has 24 divisors (see below), whose sum is σ = 6108694560. Its totient is φ = 750190392.

The previous prime is 2625666661. The next prime is 2625666727. The reversal of 2625666666 is 6666665262.

2625666666 is a modest number, since divided by 66666 gives 26256 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2625666661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4465126 + ... + 4465713.

It is an arithmetic number, because the mean of its divisors is an integer number (254528940).

Almost surely, 2^2625666666 is an apocalyptic number.

2625666666 is an abundant number, since it is smaller than the sum of its proper divisors (3483027894).

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

2625666666 is a wasteful number, since it uses less digits than its factorization.

2625666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930858 (or 8930851 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 51.

The square root of 2625666666 is about 51241.2594107522. The cubic root of 2625666666 is about 1379.5788580484.

The spelling of 2625666666 in words is "two billion, six hundred twenty-five million, six hundred sixty-six thousand, six hundred sixty-six".