25550680193 has 2 divisors, whose sum is σ = 25550680194. Its totient is φ = 25550680192.

The previous prime is 25550680147. The next prime is 25550680223. The reversal of 25550680193 is 39108605552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17354637169 + 8196043024 = 131737^2 + 90532^2 .

It is a cyclic number.

It is not a de Polignac number, because 25550680193 - 2¹⁰ = 25550679169 is a prime.

It is not a weakly prime, because it can be changed into another prime (25550680093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775340096 + 12775340097.

It is an arithmetic number, because the mean of its divisors is an integer number (12775340097).

Almost surely, 2^25550680193 is an apocalyptic number.

It is an amenable number.

25550680193 is a deficient number, since it is larger than the sum of its proper divisors (1).

25550680193 is an equidigital number, since it uses as much as digits as its factorization.

25550680193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 25550680193 in words is "twenty-five billion, five hundred fifty million, six hundred eighty thousand, one hundred ninety-three".