25506116003 has 2 divisors, whose sum is σ = 25506116004. Its totient is φ = 25506116002.

The previous prime is 25506115991. The next prime is 25506116029. The reversal of 25506116003 is 30061160552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25506116003 - 2²⁸ = 25237680547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25506116203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753058001 + 12753058002.

It is an arithmetic number, because the mean of its divisors is an integer number (12753058002).

Almost surely, 2^25506116003 is an apocalyptic number.

25506116003 is a deficient number, since it is larger than the sum of its proper divisors (1).

25506116003 is an equidigital number, since it uses as much as digits as its factorization.

25506116003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 25506116003 its reverse (30061160552), we get a palindrome (55567276555).

The spelling of 25506116003 in words is "twenty-five billion, five hundred six million, one hundred sixteen thousand, three".