25990398354803 has 2 divisors, whose sum is σ = 25990398354804. Its totient is φ = 25990398354802.

The previous prime is 25990398354763. The next prime is 25990398354847. The reversal of 25990398354803 is 30845389309952.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25990398354803 is a prime.

It is not a weakly prime, because it can be changed into another prime (25990398354103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12995199177401 + 12995199177402.

It is an arithmetic number, because the mean of its divisors is an integer number (12995199177402).

Almost surely, 2^{25990398354803} is an apocalyptic number.

25990398354803 is a deficient number, since it is larger than the sum of its proper divisors (1).

25990398354803 is an equidigital number, since it uses as much as digits as its factorization.

25990398354803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 251942400, while the sum is 68.

The spelling of 25990398354803 in words is "twenty-five trillion, nine hundred ninety billion, three hundred ninety-eight million, three hundred fifty-four thousand, eight hundred three".