1031305225 has 6 divisors (see below), whose sum is σ = 1278818510. Its totient is φ = 825044160.

The previous prime is 1031305193. The next prime is 1031305259. The reversal of 1031305225 is 5225031301.

1031305225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 22099401 + 1009205824 = 4701^2 + 31768^2 .

It is not a de Polignac number, because 1031305225 - 2⁵ = 1031305193 is a prime.

It is a super-2 number, since 2×1031305225² = 2127180934224601250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031305196 and 1031305205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20626080 + ... + 20626129.

Almost surely, 2^1031305225 is an apocalyptic number.

It is an amenable number.

1031305225 is a deficient number, since it is larger than the sum of its proper divisors (247513285).

1031305225 is an equidigital number, since it uses as much as digits as its factorization.

1031305225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41252219 (or 41252214 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1031305225 is about 32113.9412872354. The cubic root of 1031305225 is about 1010.3280393775.

Adding to 1031305225 its reverse (5225031301), we get a palindrome (6256336526).

The spelling of 1031305225 in words is "one billion, thirty-one million, three hundred five thousand, two hundred twenty-five".