503005025253 has 4 divisors (see below), whose sum is σ = 670673367008. Its totient is φ = 335336683500.

The previous prime is 503005025191. The next prime is 503005025279. The reversal of 503005025253 is 352520500305.

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 not a de Polignac number, because 503005025253 - 2⁹ = 503005024741 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 503005025253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503005025153) 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, 83834170873 + ... + 83834170878.

It is an arithmetic number, because the mean of its divisors is an integer number (167668341752).

Almost surely, 2^503005025253 is an apocalyptic number.

It is an amenable number.

503005025253 is a deficient number, since it is larger than the sum of its proper divisors (167668341755).

503005025253 is a wasteful number, since it uses less digits than its factorization.

503005025253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167668341754.

The product of its (nonzero) digits is 22500, while the sum is 30.

Adding to 503005025253 its reverse (352520500305), we get a palindrome (855525525558).

The spelling of 503005025253 in words is "five hundred three billion, five million, twenty-five thousand, two hundred fifty-three".