25503647413 has 2 divisors, whose sum is σ = 25503647414. Its totient is φ = 25503647412.

The previous prime is 25503647357. The next prime is 25503647417. The reversal of 25503647413 is 31474630552.

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., 18949449649 + 6554197764 = 137657^2 + 80958^2 .

It is a cyclic number.

It is not a de Polignac number, because 25503647413 - 2¹⁷ = 25503516341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25503647417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751823706 + 12751823707.

It is an arithmetic number, because the mean of its divisors is an integer number (12751823707).

Almost surely, 2^25503647413 is an apocalyptic number.

It is an amenable number.

25503647413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25503647413 is an equidigital number, since it uses as much as digits as its factorization.

25503647413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 25503647413 in words is "twenty-five billion, five hundred three million, six hundred forty-seven thousand, four hundred thirteen".