2220664225 has 72 divisors (see below), whose sum is σ = 3117336192. Its totient is φ = 1567238400.

The previous prime is 2220664217. The next prime is 2220664247. The reversal of 2220664225 is 5224660222.

It is a happy number.

It is not a de Polignac number, because 2220664225 - 2³ = 2220664217 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10524370 + ... + 10524580.

It is an arithmetic number, because the mean of its divisors is an integer number (43296336).

Almost surely, 2^2220664225 is an apocalyptic number.

2220664225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220664225 is a deficient number, since it is larger than the sum of its proper divisors (896671967).

2220664225 is a wasteful number, since it uses less digits than its factorization.

2220664225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 2220664225 is about 47123.9241256498. The cubic root of 2220664225 is about 1304.6508414455.

The spelling of 2220664225 in words is "two billion, two hundred twenty million, six hundred sixty-four thousand, two hundred twenty-five".