25554738474833 has 2 divisors, whose sum is σ = 25554738474834. Its totient is φ = 25554738474832.

The previous prime is 25554738474817. The next prime is 25554738474883. The reversal of 25554738474833 is 33847483745552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24482080555969 + 1072657918864 = 4947937^2 + 1035692^2 .

It is a cyclic number.

It is not a de Polignac number, because 25554738474833 - 2⁴ = 25554738474817 is a prime.

It is a super-2 number, since 2×25554738474833² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25554738474883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777369237416 + 12777369237417.

It is an arithmetic number, because the mean of its divisors is an integer number (12777369237417).

Almost surely, 2^{25554738474833} is an apocalyptic number.

It is an amenable number.

25554738474833 is a deficient number, since it is larger than the sum of its proper divisors (1).

25554738474833 is an equidigital number, since it uses as much as digits as its factorization.

25554738474833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752000, while the sum is 68.

The spelling of 25554738474833 in words is "twenty-five trillion, five hundred fifty-four billion, seven hundred thirty-eight million, four hundred seventy-four thousand, eight hundred thirty-three".