6667725853636 has 81 divisors (see below), whose sum is σ = 12065351029389. Its totient is φ = 3224189401056.

The previous prime is 6667725853631. The next prime is 6667725853643. The reversal of 6667725853636 is 6363585277666.

The square root of 6667725853636 is 2582194.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1149248320900 + 5518477532736 = 1072030^2 + 2349144^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6667725853631) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24071212330 + ... + 24071212606.

Almost surely, 2^{6667725853636} is an apocalyptic number.

6667725853636 is the 2582194-th square number.

It is an amenable number.

6667725853636 is a deficient number, since it is larger than the sum of its proper divisors (5397625175753).

6667725853636 is an frugal number, since it uses more digits than its factorization.

6667725853636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 417 counting only the distinct ones).

The product of its digits is 1371686400, while the sum is 70.

The spelling of 6667725853636 in words is "six trillion, six hundred sixty-seven billion, seven hundred twenty-five million, eight hundred fifty-three thousand, six hundred thirty-six".