5225538666 has 32 divisors (see below), whose sum is σ = 10541301120. Its totient is φ = 1726843136.

The previous prime is 5225538649. The next prime is 5225538667. The reversal of 5225538666 is 6668355225.

It is a super-2 number, since 2×5225538666² = 54612508699722119112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5225538667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685870 + ... + 693446.

It is an arithmetic number, because the mean of its divisors is an integer number (329415660).

Almost surely, 2^5225538666 is an apocalyptic number.

5225538666 is an abundant number, since it is smaller than the sum of its proper divisors (5315762454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5225538666 is a wasteful number, since it uses less digits than its factorization.

5225538666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8558.

The product of its digits is 2592000, while the sum is 48.

The square root of 5225538666 is about 72287.8874086109. The cubic root of 5225538666 is about 1735.3098097743.

The spelling of 5225538666 in words is "five billion, two hundred twenty-five million, five hundred thirty-eight thousand, six hundred sixty-six".