25613164460503 has 2 divisors, whose sum is σ = 25613164460504. Its totient is φ = 25613164460502.

The previous prime is 25613164460501. The next prime is 25613164460509. The reversal of 25613164460503 is 30506446131652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25613164460503 - 2¹ = 25613164460501 is a prime.

Together with 25613164460501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25613164460501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12806582230251 + 12806582230252.

It is an arithmetic number, because the mean of its divisors is an integer number (12806582230252).

Almost surely, 2^{25613164460503} is an apocalyptic number.

25613164460503 is a deficient number, since it is larger than the sum of its proper divisors (1).

25613164460503 is an equidigital number, since it uses as much as digits as its factorization.

25613164460503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 25613164460503 in words is "twenty-five trillion, six hundred thirteen billion, one hundred sixty-four million, four hundred sixty thousand, five hundred three".