25553005505503 has 32 divisors (see below), whose sum is σ = 30433409648640. Its totient is φ = 20997851253120.

The previous prime is 25553005505449. The next prime is 25553005505537. The reversal of 25553005505503 is 30550550035552.

It is a de Polignac number, because none of the positive numbers 2^k-25553005505503 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 25553005505503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25553005505563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30274950 + ... + 31107532.

It is an arithmetic number, because the mean of its divisors is an integer number (951044051520).

Almost surely, 2^{25553005505503} is an apocalyptic number.

25553005505503 is a deficient number, since it is larger than the sum of its proper divisors (4880404143137).

25553005505503 is a wasteful number, since it uses less digits than its factorization.

25553005505503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834367.

The product of its (nonzero) digits is 1406250, while the sum is 43.

The spelling of 25553005505503 in words is "twenty-five trillion, five hundred fifty-three billion, five million, five hundred five thousand, five hundred three".