25505502550503 has 8 divisors (see below), whose sum is σ = 34007462663808. Its totient is φ = 17003605402104.

The previous prime is 25505502550441. The next prime is 25505502550547. The reversal of 25505502550503 is 30505520550552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25505502550503 - 2²⁶ = 25505435441639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505502550553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14787801 + ... + 16422242.

It is an arithmetic number, because the mean of its divisors is an integer number (4250932832976).

Almost surely, 2^{25505502550503} is an apocalyptic number.

25505502550503 is a deficient number, since it is larger than the sum of its proper divisors (8501960113305).

25505502550503 is a wasteful number, since it uses less digits than its factorization.

25505502550503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31482453.

The product of its (nonzero) digits is 937500, while the sum is 42.

The spelling of 25505502550503 in words is "twenty-five trillion, five hundred five billion, five hundred two million, five hundred fifty thousand, five hundred three".