505525025503 has 4 divisors (see below), whose sum is σ = 505600113928. Its totient is φ = 505449937080.

The previous prime is 505525025479. The next prime is 505525025531. The reversal of 505525025503 is 305520525505.

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 505525025503 - 2⁵ = 505525025471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505525025903) 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, 37534113 + ... + 37547578.

It is an arithmetic number, because the mean of its divisors is an integer number (126400028482).

Almost surely, 2^505525025503 is an apocalyptic number.

505525025503 is a deficient number, since it is larger than the sum of its proper divisors (75088425).

505525025503 is an equidigital number, since it uses as much as digits as its factorization.

505525025503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75088424.

The product of its (nonzero) digits is 187500, while the sum is 37.

The spelling of 505525025503 in words is "five hundred five billion, five hundred twenty-five million, twenty-five thousand, five hundred three".