6625355129 has 2 divisors, whose sum is σ = 6625355130. Its totient is φ = 6625355128.

The previous prime is 6625355117. The next prime is 6625355147. The reversal of 6625355129 is 9215535266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6107109904 + 518245225 = 78148^2 + 22765^2 .

It is a cyclic number.

It is not a de Polignac number, because 6625355129 - 2²⁰ = 6624306553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6625355129.

It is not a weakly prime, because it can be changed into another prime (6625355159) 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 as a sum of consecutive naturals, namely, 3312677564 + 3312677565.

It is an arithmetic number, because the mean of its divisors is an integer number (3312677565).

Almost surely, 2^6625355129 is an apocalyptic number.

It is an amenable number.

6625355129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6625355129 is an equidigital number, since it uses as much as digits as its factorization.

6625355129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 44.

The square root of 6625355129 is about 81396.2844913698. The cubic root of 6625355129 is about 1878.1764354041.

The spelling of 6625355129 in words is "six billion, six hundred twenty-five million, three hundred fifty-five thousand, one hundred twenty-nine".