25543608842803 has 2 divisors, whose sum is σ = 25543608842804. Its totient is φ = 25543608842802.

The previous prime is 25543608842797. The next prime is 25543608842849. The reversal of 25543608842803 is 30824880634552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25543608842803 is a prime.

It is not a weakly prime, because it can be changed into another prime (25543608842863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771804421401 + 12771804421402.

It is an arithmetic number, because the mean of its divisors is an integer number (12771804421402).

Almost surely, 2^{25543608842803} is an apocalyptic number.

25543608842803 is a deficient number, since it is larger than the sum of its proper divisors (1).

25543608842803 is an equidigital number, since it uses as much as digits as its factorization.

25543608842803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44236800, while the sum is 58.

The spelling of 25543608842803 in words is "twenty-five trillion, five hundred forty-three billion, six hundred eight million, eight hundred forty-two thousand, eight hundred three".