25161326526437 has 2 divisors, whose sum is σ = 25161326526438. Its totient is φ = 25161326526436.

The previous prime is 25161326526299. The next prime is 25161326526533. The reversal of 25161326526437 is 73462562316152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24236332687681 + 924993838756 = 4923041^2 + 961766^2 .

It is a cyclic number.

It is not a de Polignac number, because 25161326526437 - 2⁸ = 25161326526181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25161326526137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580663263218 + 12580663263219.

It is an arithmetic number, because the mean of its divisors is an integer number (12580663263219).

Almost surely, 2^{25161326526437} is an apocalyptic number.

It is an amenable number.

25161326526437 is a deficient number, since it is larger than the sum of its proper divisors (1).

25161326526437 is an equidigital number, since it uses as much as digits as its factorization.

25161326526437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 53.

The spelling of 25161326526437 in words is "twenty-five trillion, one hundred sixty-one billion, three hundred twenty-six million, five hundred twenty-six thousand, four hundred thirty-seven".