505500025553 has 4 divisors (see below), whose sum is σ = 505505977968. Its totient is φ = 505494073140.

The previous prime is 505500025507. The next prime is 505500025573. The reversal of 505500025553 is 355520005505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505500025553 - 2²⁰ = 505498976977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505500025573) 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, 2846951 + ... + 3019292.

It is an arithmetic number, because the mean of its divisors is an integer number (126376494492).

Almost surely, 2^505500025553 is an apocalyptic number.

It is an amenable number.

505500025553 is a deficient number, since it is larger than the sum of its proper divisors (5952415).

505500025553 is an equidigital number, since it uses as much as digits as its factorization.

505500025553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952414.

The product of its (nonzero) digits is 93750, while the sum is 35.

The spelling of 505500025553 in words is "five hundred five billion, five hundred million, twenty-five thousand, five hundred fifty-three".