25804312003 has 4 divisors (see below), whose sum is σ = 26054839408. Its totient is φ = 25553784600.

The previous prime is 25804311979. The next prime is 25804312057. The reversal of 25804312003 is 30021340852.

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 25804312003 - 2⁵ = 25804311971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25804312063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125263548 + ... + 125263753.

It is an arithmetic number, because the mean of its divisors is an integer number (6513709852).

Almost surely, 2^25804312003 is an apocalyptic number.

25804312003 is a deficient number, since it is larger than the sum of its proper divisors (250527405).

25804312003 is a wasteful number, since it uses less digits than its factorization.

25804312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250527404.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 25804312003 its reverse (30021340852), we get a palindrome (55825652855).

The spelling of 25804312003 in words is "twenty-five billion, eight hundred four million, three hundred twelve thousand, three".