25603664334211 has 2 divisors, whose sum is σ = 25603664334212. Its totient is φ = 25603664334210.

The previous prime is 25603664334133. The next prime is 25603664334229. The reversal of 25603664334211 is 11243346630652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25603664334211 - 2³¹ = 25601516850563 is a prime.

It is not a weakly prime, because it can be changed into another prime (25603664334251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801832167105 + 12801832167106.

It is an arithmetic number, because the mean of its divisors is an integer number (12801832167106).

Almost surely, 2^{25603664334211} is an apocalyptic number.

25603664334211 is a deficient number, since it is larger than the sum of its proper divisors (1).

25603664334211 is an equidigital number, since it uses as much as digits as its factorization.

25603664334211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 25603664334211 in words is "twenty-five trillion, six hundred three billion, six hundred sixty-four million, three hundred thirty-four thousand, two hundred eleven".