25277924620813 has 2 divisors, whose sum is σ = 25277924620814. Its totient is φ = 25277924620812.

The previous prime is 25277924620789. The next prime is 25277924620849. The reversal of 25277924620813 is 31802642977252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23358294973764 + 1919629647049 = 4833042^2 + 1385507^2 .

It is a cyclic number.

It is not a de Polignac number, because 25277924620813 - 2²¹ = 25277922523661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25277924620513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12638962310406 + 12638962310407.

It is an arithmetic number, because the mean of its divisors is an integer number (12638962310407).

It is a 1-persistent number, because it is pandigital, but 2⋅25277924620813 = 50555849241626 is not.

Almost surely, 2^{25277924620813} is an apocalyptic number.

It is an amenable number.

25277924620813 is a deficient number, since it is larger than the sum of its proper divisors (1).

25277924620813 is an equidigital number, since it uses as much as digits as its factorization.

25277924620813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 25277924620813 in words is "twenty-five trillion, two hundred seventy-seven billion, nine hundred twenty-four million, six hundred twenty thousand, eight hundred thirteen".