25506116203 has 2 divisors, whose sum is σ = 25506116204. Its totient is φ = 25506116202.

The previous prime is 25506116197. The next prime is 25506116297. The reversal of 25506116203 is 30261160552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25506116203 - 2¹³ = 25506108011 is a prime.

It is not a weakly prime, because it can be changed into another prime (25506116003) 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, 12753058101 + 12753058102.

It is an arithmetic number, because the mean of its divisors is an integer number (12753058102).

Almost surely, 2^25506116203 is an apocalyptic number.

25506116203 is a deficient number, since it is larger than the sum of its proper divisors (1).

25506116203 is an equidigital number, since it uses as much as digits as its factorization.

25506116203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 25506116203 its reverse (30261160552), we get a palindrome (55767276755).

The spelling of 25506116203 in words is "twenty-five billion, five hundred six million, one hundred sixteen thousand, two hundred three".