2766666225 has 48 divisors (see below), whose sum is σ = 4702810112. Its totient is φ = 1434404160.

The previous prime is 2766666191. The next prime is 2766666257. The reversal of 2766666225 is 5226666672.

It is not a de Polignac number, because 2766666225 - 2²⁸ = 2498230769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717252 + ... + 721098.

Almost surely, 2^2766666225 is an apocalyptic number.

2766666225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2766666225 is a deficient number, since it is larger than the sum of its proper divisors (1936143887).

2766666225 is a wasteful number, since it uses less digits than its factorization.

2766666225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126 (or 4121 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 48.

The square root of 2766666225 is about 52599.1085951083. The cubic root of 2766666225 is about 1403.8442346938.

The spelling of 2766666225 in words is "two billion, seven hundred sixty-six million, six hundred sixty-six thousand, two hundred twenty-five".