5665665225 has 48 divisors (see below), whose sum is σ = 10819932480. Its totient is φ = 2585395200.

The previous prime is 5665665221. The next prime is 5665665227. The reversal of 5665665225 is 5225665665.

It is not a de Polignac number, because 5665665225 - 2² = 5665665221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5665665221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187960 + ... + 216009.

It is an arithmetic number, because the mean of its divisors is an integer number (225415260).

Almost surely, 2^5665665225 is an apocalyptic number.

5665665225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5665665225 is a deficient number, since it is larger than the sum of its proper divisors (5154267255).

5665665225 is a wasteful number, since it uses less digits than its factorization.

5665665225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404010 (or 404005 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The square root of 5665665225 is about 75270.6132896498. The cubic root of 5665665225 is about 1782.7220508538.

The spelling of 5665665225 in words is "five billion, six hundred sixty-five million, six hundred sixty-five thousand, two hundred twenty-five".