25813814603 has 2 divisors, whose sum is σ = 25813814604. Its totient is φ = 25813814602.

The previous prime is 25813814569. The next prime is 25813814639. The reversal of 25813814603 is 30641831852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25813814603 - 2¹² = 25813810507 is a prime.

It is not a weakly prime, because it can be changed into another prime (25813814303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906907301 + 12906907302.

It is an arithmetic number, because the mean of its divisors is an integer number (12906907302).

Almost surely, 2^25813814603 is an apocalyptic number.

25813814603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25813814603 is an equidigital number, since it uses as much as digits as its factorization.

25813814603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 25813814603 in words is "twenty-five billion, eight hundred thirteen million, eight hundred fourteen thousand, six hundred three".