6613525609 has 2 divisors, whose sum is σ = 6613525610. Its totient is φ = 6613525608.

The previous prime is 6613525577. The next prime is 6613525613. The reversal of 6613525609 is 9065253166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4389460009 + 2224065600 = 66253^2 + 47160^2 .

It is a cyclic number.

It is not a de Polignac number, because 6613525609 - 2⁵ = 6613525577 is a prime.

It is not a weakly prime, because it can be changed into another prime (6613505609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306762804 + 3306762805.

It is an arithmetic number, because the mean of its divisors is an integer number (3306762805).

Almost surely, 2^6613525609 is an apocalyptic number.

It is an amenable number.

6613525609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6613525609 is an equidigital number, since it uses as much as digits as its factorization.

6613525609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 6613525609 is about 81323.5858100219. The cubic root of 6613525609 is about 1877.0579463210.

The spelling of 6613525609 in words is "six billion, six hundred thirteen million, five hundred twenty-five thousand, six hundred nine".