25721741203187 has 2 divisors, whose sum is σ = 25721741203188. Its totient is φ = 25721741203186.

The previous prime is 25721741203157. The next prime is 25721741203217. The reversal of 25721741203187 is 78130214712752.

It is a balanced prime because it is at equal distance from previous prime (25721741203157) and next prime (25721741203217).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25721741203187 is a prime.

It is not a weakly prime, because it can be changed into another prime (25721741203157) 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, 12860870601593 + 12860870601594.

It is an arithmetic number, because the mean of its divisors is an integer number (12860870601594).

Almost surely, 2^{25721741203187} is an apocalyptic number.

25721741203187 is a deficient number, since it is larger than the sum of its proper divisors (1).

25721741203187 is an equidigital number, since it uses as much as digits as its factorization.

25721741203187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 25721741203187 in words is "twenty-five trillion, seven hundred twenty-one billion, seven hundred forty-one million, two hundred three thousand, one hundred eighty-seven".