2218625266 has 64 divisors (see below), whose sum is σ = 4010493312. Its totient is φ = 914760000.

The previous prime is 2218625263. The next prime is 2218625281. The reversal of 2218625266 is 6625268122.

It is not an unprimeable number, because it can be changed into a prime (2218625263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2110441 + ... + 2111491.

It is an arithmetic number, because the mean of its divisors is an integer number (62663958).

Almost surely, 2^2218625266 is an apocalyptic number.

2218625266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2218625266 is a deficient number, since it is larger than the sum of its proper divisors (1791868046).

2218625266 is a wasteful number, since it uses less digits than its factorization.

2218625266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1138 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 2218625266 is about 47102.2851462644. The cubic root of 2218625266 is about 1304.2514197897.

The spelling of 2218625266 in words is "two billion, two hundred eighteen million, six hundred twenty-five thousand, two hundred sixty-six".