2525780557801 has 2 divisors, whose sum is σ = 2525780557802. Its totient is φ = 2525780557800.

The previous prime is 2525780557799. The next prime is 2525780557813. The reversal of 2525780557801 is 1087550875252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2521985381776 + 3795176025 = 1588076^2 + 61605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525780557801 - 2¹ = 2525780557799 is a prime.

Together with 2525780557799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2525780557841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262890278900 + 1262890278901.

It is an arithmetic number, because the mean of its divisors is an integer number (1262890278901).

Almost surely, 2^{2525780557801} is an apocalyptic number.

It is an amenable number.

2525780557801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525780557801 is an equidigital number, since it uses as much as digits as its factorization.

2525780557801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840000, while the sum is 55.

The spelling of 2525780557801 in words is "two trillion, five hundred twenty-five billion, seven hundred eighty million, five hundred fifty-seven thousand, eight hundred one".