1005043225 has 12 divisors (see below), whose sum is σ = 1253144620. Its totient is φ = 799588800.

The previous prime is 1005043201. The next prime is 1005043243. The reversal of 1005043225 is 5223405001.

It can be written as a sum of positive squares in 6 ways, for example, as 130599184 + 874444041 = 11428^2 + 29571^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1005043225 is a prime.

It is a super-2 number, since 2×1005043225² = 2020223768236801250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005043196 and 1005043205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106530 + ... + 115579.

Almost surely, 2^1005043225 is an apocalyptic number.

It is an amenable number.

1005043225 is a deficient number, since it is larger than the sum of its proper divisors (248101395).

1005043225 is a wasteful number, since it uses less digits than its factorization.

1005043225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222300 (or 222295 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1005043225 is about 31702.4167059863. The cubic root of 1005043225 is about 1001.6782568782.

Adding to 1005043225 its reverse (5223405001), we get a palindrome (6228448226).

The spelling of 1005043225 in words is "one billion, five million, forty-three thousand, two hundred twenty-five".