25505003003 has 4 divisors (see below), whose sum is σ = 25552147728. Its totient is φ = 25457858280.

The previous prime is 25505002997. The next prime is 25505003047. The reversal of 25505003003 is 30030050552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25505003003 - 2⁴ = 25505002987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25505003003.

It is not an unprimeable number, because it can be changed into a prime (25505003903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23571551 + ... + 23572632.

It is an arithmetic number, because the mean of its divisors is an integer number (6388036932).

Almost surely, 2^25505003003 is an apocalyptic number.

25505003003 is a deficient number, since it is larger than the sum of its proper divisors (47144725).

25505003003 is an equidigital number, since it uses as much as digits as its factorization.

25505003003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47144724.

The product of its (nonzero) digits is 2250, while the sum is 23.

Adding to 25505003003 its reverse (30030050552), we get a palindrome (55535053555).

The spelling of 25505003003 in words is "twenty-five billion, five hundred five million, three thousand, three".