2666443125 has 20 divisors (see below), whose sum is σ = 4442652896. Its totient is φ = 1422102000.

The previous prime is 2666443097. The next prime is 2666443141. The reversal of 2666443125 is 5213446662.

It is not a de Polignac number, because 2666443125 - 2¹² = 2666439029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 709177 + ... + 712926.

Almost surely, 2^2666443125 is an apocalyptic number.

2666443125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2666443125 is a deficient number, since it is larger than the sum of its proper divisors (1776209771).

2666443125 is an equidigital number, since it uses as much as digits as its factorization.

2666443125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422126 (or 1422111 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 2666443125 is about 51637.6134711898. The cubic root of 2666443125 is about 1386.6837988348.

Adding to 2666443125 its reverse (5213446662), we get a palindrome (7879889787).

The spelling of 2666443125 in words is "two billion, six hundred sixty-six million, four hundred forty-three thousand, one hundred twenty-five".