25015084936021 has 2 divisors, whose sum is σ = 25015084936022. Its totient is φ = 25015084936020.

The previous prime is 25015084936003. The next prime is 25015084936057. The reversal of 25015084936021 is 12063948051052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24668853900625 + 346231035396 = 4966775^2 + 588414^2 .

It is a cyclic number.

It is not a de Polignac number, because 25015084936021 - 2⁹ = 25015084935509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25015084936001) 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, 12507542468010 + 12507542468011.

It is an arithmetic number, because the mean of its divisors is an integer number (12507542468011).

Almost surely, 2^{25015084936021} is an apocalyptic number.

It is an amenable number.

25015084936021 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015084936021 is an equidigital number, since it uses as much as digits as its factorization.

25015084936021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 25015084936021 in words is "twenty-five trillion, fifteen billion, eighty-four million, nine hundred thirty-six thousand, twenty-one".