2666525166 has 48 divisors (see below), whose sum is σ = 5981361984. Its totient is φ = 857993472.

The previous prime is 2666525149. The next prime is 2666525167. The reversal of 2666525166 is 6615256662.

It is a happy number.

It is a super-3 number, since 3×2666525166³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666525167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40170 + ... + 83346.

It is an arithmetic number, because the mean of its divisors is an integer number (124611708).

Almost surely, 2^2666525166 is an apocalyptic number.

2666525166 is an abundant number, since it is smaller than the sum of its proper divisors (3314836818).

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

2666525166 is a wasteful number, since it uses less digits than its factorization.

2666525166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43305 (or 43302 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 2666525166 is about 51638.4078569431. The cubic root of 2666525166 is about 1386.6980204968.

The spelling of 2666525166 in words is "two billion, six hundred sixty-six million, five hundred twenty-five thousand, one hundred sixty-six".