6625665229 has 2 divisors, whose sum is σ = 6625665230. Its totient is φ = 6625665228.

The previous prime is 6625665143. The next prime is 6625665301. The reversal of 6625665229 is 9225665266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6033716329 + 591948900 = 77677^2 + 24330^2 .

It is a cyclic number.

It is not a de Polignac number, because 6625665229 - 2¹³ = 6625657037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6625663229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312832614 + 3312832615.

It is an arithmetic number, because the mean of its divisors is an integer number (3312832615).

Almost surely, 2^6625665229 is an apocalyptic number.

It is an amenable number.

6625665229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6625665229 is an equidigital number, since it uses as much as digits as its factorization.

6625665229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 49.

The square root of 6625665229 is about 81398.1893471839. The cubic root of 6625665229 is about 1878.2057376535.

The spelling of 6625665229 in words is "six billion, six hundred twenty-five million, six hundred sixty-five thousand, two hundred twenty-nine".