2125611617 has 2 divisors, whose sum is σ = 2125611618. Its totient is φ = 2125611616.

The previous prime is 2125611601. The next prime is 2125611629. The reversal of 2125611617 is 7161165212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1997106721 + 128504896 = 44689^2 + 11336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125611617 - 2⁴ = 2125611601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125613617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062805808 + 1062805809.

It is an arithmetic number, because the mean of its divisors is an integer number (1062805809).

Almost surely, 2^2125611617 is an apocalyptic number.

It is an amenable number.

2125611617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125611617 is an equidigital number, since it uses as much as digits as its factorization.

2125611617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 2125611617 is about 46104.3557269809. The cubic root of 2125611617 is about 1285.7641277744.

Adding to 2125611617 its reverse (7161165212), we get a palindrome (9286776829).

The spelling of 2125611617 in words is "two billion, one hundred twenty-five million, six hundred eleven thousand, six hundred seventeen".