225003503 has 4 divisors (see below), whose sum is σ = 234786288. Its totient is φ = 215220720.

The previous prime is 225003463. The next prime is 225003509. The reversal of 225003503 is 305300522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225003503 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 (225003509) 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, 4891358 + ... + 4891403.

It is an arithmetic number, because the mean of its divisors is an integer number (58696572).

Almost surely, 2^225003503 is an apocalyptic number.

225003503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

225003503 is a deficient number, since it is larger than the sum of its proper divisors (9782785).

225003503 is an equidigital number, since it uses as much as digits as its factorization.

225003503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782784.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 225003503 is about 15000.1167662122. The cubic root of 225003503 is about 608.2233559785.

The spelling of 225003503 in words is "two hundred twenty-five million, three thousand, five hundred three".