1003225281 has 4 divisors (see below), whose sum is σ = 1337633712. Its totient is φ = 668816852.

The previous prime is 1003225277. The next prime is 1003225283. The reversal of 1003225281 is 1825223001.

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 1003225281 - 2² = 1003225277 is a prime.

It is a super-2 number, since 2×1003225281² = 2012921928875057922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1003225283) 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, 167204211 + ... + 167204216.

It is an arithmetic number, because the mean of its divisors is an integer number (334408428).

Almost surely, 2^1003225281 is an apocalyptic number.

It is an amenable number.

1003225281 is a deficient number, since it is larger than the sum of its proper divisors (334408431).

1003225281 is an equidigital number, since it uses as much as digits as its factorization.

1003225281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334408430.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1003225281 is about 31673.7317188866. The cubic root of 1003225281 is about 1001.0739399069.

Adding to 1003225281 its reverse (1825223001), we get a palindrome (2828448282).

The spelling of 1003225281 in words is "one billion, three million, two hundred twenty-five thousand, two hundred eighty-one".