25573938251413 has 2 divisors, whose sum is σ = 25573938251414. Its totient is φ = 25573938251412.

The previous prime is 25573938251363. The next prime is 25573938251423. The reversal of 25573938251413 is 31415283937552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25568222589009 + 5715662404 = 5056503^2 + 75602^2 .

It is a cyclic number.

It is not a de Polignac number, because 25573938251413 - 2⁹ = 25573938250901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25573938251423) 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, 12786969125706 + 12786969125707.

It is an arithmetic number, because the mean of its divisors is an integer number (12786969125707).

Almost surely, 2^{25573938251413} is an apocalyptic number.

It is an amenable number.

25573938251413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25573938251413 is an equidigital number, since it uses as much as digits as its factorization.

25573938251413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216000, while the sum is 58.

The spelling of 25573938251413 in words is "twenty-five trillion, five hundred seventy-three billion, nine hundred thirty-eight million, two hundred fifty-one thousand, four hundred thirteen".