2666225 has 6 divisors (see below), whose sum is σ = 3306150. Its totient is φ = 2132960.

The previous prime is 2666221. The next prime is 2666227. The reversal of 2666225 is 5226662.

It can be written as a sum of positive squares in 3 ways, for example, as 717409 + 1948816 = 847^2 + 1396^2 .

It is not a de Polignac number, because 2666225 - 2² = 2666221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2666221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53300 + ... + 53349.

It is an arithmetic number, because the mean of its divisors is an integer number (551025).

2^2666225 is an apocalyptic number.

2666225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2666225 is a deficient number, since it is larger than the sum of its proper divisors (639925).

2666225 is a wasteful number, since it uses less digits than its factorization.

2666225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106659 (or 106654 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 2666225 is about 1632.8579240093. The cubic root of 2666225 is about 138.6645985833.

The spelling of 2666225 in words is "two million, six hundred sixty-six thousand, two hundred twenty-five".