252503052503 has 4 divisors (see below), whose sum is σ = 271926364248. Its totient is φ = 233079740760.

The previous prime is 252503052499. The next prime is 252503052511. The reversal of 252503052503 is 305250305252.

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 252503052503 - 2² = 252503052499 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 252503052503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252503052533) 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, 9711655853 + ... + 9711655878.

It is an arithmetic number, because the mean of its divisors is an integer number (67981591062).

Almost surely, 2^252503052503 is an apocalyptic number.

252503052503 is a deficient number, since it is larger than the sum of its proper divisors (19423311745).

252503052503 is a wasteful number, since it uses less digits than its factorization.

252503052503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19423311744.

The product of its (nonzero) digits is 45000, while the sum is 32.

Adding to 252503052503 its reverse (305250305252), we get a palindrome (557753357755).

The spelling of 252503052503 in words is "two hundred fifty-two billion, five hundred three million, fifty-two thousand, five hundred three".