6616705525 has 6 divisors (see below), whose sum is σ = 8204714882. Its totient is φ = 5293364400.

The previous prime is 6616705499. The next prime is 6616705607. The reversal of 6616705525 is 5255076166.

It can be written as a sum of positive squares in 3 ways, for example, as 143376676 + 6473328849 = 11974^2 + 80457^2 .

It is not a de Polignac number, because 6616705525 - 2⁷ = 6616705397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132334086 + ... + 132334135.

Almost surely, 2^6616705525 is an apocalyptic number.

It is an amenable number.

6616705525 is a deficient number, since it is larger than the sum of its proper divisors (1588009357).

6616705525 is a wasteful number, since it uses less digits than its factorization.

6616705525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264668231 (or 264668226 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 6616705525 is about 81343.1344675136. The cubic root of 6616705525 is about 1877.3587405091.

The spelling of 6616705525 in words is "six billion, six hundred sixteen million, seven hundred five thousand, five hundred twenty-five".