6660025156 has 12 divisors (see below), whose sum is σ = 11874950892. Its totient is φ = 3267182048.

The previous prime is 6660025147. The next prime is 6660025157. The reversal of 6660025156 is 6515200666.

It can be written as a sum of positive squares in 2 ways, for example, as 5954591556 + 705433600 = 77166^2 + 26560^2 .

It is not an unprimeable number, because it can be changed into a prime (6660025157) 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 3 ways as a sum of consecutive naturals, for example, 15707395 + ... + 15707818.

It is an arithmetic number, because the mean of its divisors is an integer number (989579241).

Almost surely, 2^6660025156 is an apocalyptic number.

It is an amenable number.

6660025156 is a deficient number, since it is larger than the sum of its proper divisors (5214925736).

6660025156 is a wasteful number, since it uses less digits than its factorization.

6660025156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31415270 (or 31415268 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 6660025156 is about 81608.9771777591. The cubic root of 6660025156 is about 1881.4468600208.

The spelling of 6660025156 in words is "six billion, six hundred sixty million, twenty-five thousand, one hundred fifty-six".