2625996649 has 2 divisors, whose sum is σ = 2625996650. Its totient is φ = 2625996648.

The previous prime is 2625996623. The next prime is 2625996679. The reversal of 2625996649 is 9466995262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2208530025 + 417466624 = 46995^2 + 20432^2 .

It is a cyclic number.

It is not a de Polignac number, because 2625996649 - 2¹⁹ = 2625472361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2625996593 and 2625996602.

It is not a weakly prime, because it can be changed into another prime (2625996679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312998324 + 1312998325.

It is an arithmetic number, because the mean of its divisors is an integer number (1312998325).

Almost surely, 2^2625996649 is an apocalyptic number.

It is an amenable number.

2625996649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2625996649 is an equidigital number, since it uses as much as digits as its factorization.

2625996649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 58.

The square root of 2625996649 is about 51244.4792050812. The cubic root of 2625996649 is about 1379.6366488953.

The spelling of 2625996649 in words is "two billion, six hundred twenty-five million, nine hundred ninety-six thousand, six hundred forty-nine".