2625865709 has 2 divisors, whose sum is σ = 2625865710. Its totient is φ = 2625865708.

The previous prime is 2625865687. The next prime is 2625865751. The reversal of 2625865709 is 9075685262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1923085609 + 702780100 = 43853^2 + 26510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2625865709 - 2⁸ = 2625865453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2625865309) 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, 1312932854 + 1312932855.

It is an arithmetic number, because the mean of its divisors is an integer number (1312932855).

Almost surely, 2^2625865709 is an apocalyptic number.

It is an amenable number.

2625865709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2625865709 is an equidigital number, since it uses as much as digits as its factorization.

2625865709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 2625865709 is about 51243.2015881131. The cubic root of 2625865709 is about 1379.6137175858.

The spelling of 2625865709 in words is "two billion, six hundred twenty-five million, eight hundred sixty-five thousand, seven hundred nine".