2208725561797 has 2 divisors, whose sum is σ = 2208725561798. Its totient is φ = 2208725561796.

The previous prime is 2208725561753. The next prime is 2208725561827. The reversal of 2208725561797 is 7971655278022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1194050111076 + 1014675450721 = 1092726^2 + 1007311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2208725561797 - 2¹⁵ = 2208725529029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2208725561737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104362780898 + 1104362780899.

It is an arithmetic number, because the mean of its divisors is an integer number (1104362780899).

Almost surely, 2^{2208725561797} is an apocalyptic number.

It is an amenable number.

2208725561797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208725561797 is an equidigital number, since it uses as much as digits as its factorization.

2208725561797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 2208725561797 in words is "two trillion, two hundred eight billion, seven hundred twenty-five million, five hundred sixty-one thousand, seven hundred ninety-seven".