1243433225 has 6 divisors (see below), whose sum is σ = 1541857230. Its totient is φ = 994746560.

The previous prime is 1243433179. The next prime is 1243433239. The reversal of 1243433225 is 5223343421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16752649 + 1226680576 = 4093^2 + 35024^2 .

It is not a de Polignac number, because 1243433225 - 2¹⁴ = 1243416841 is a prime.

It is a super-2 number, since 2×1243433225² = 3092252370067801250, which contains 22 as substring.

It is a Curzon number.

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, 24868640 + ... + 24868689.

It is an arithmetic number, because the mean of its divisors is an integer number (256976205).

Almost surely, 2^1243433225 is an apocalyptic number.

It is an amenable number.

1243433225 is a deficient number, since it is larger than the sum of its proper divisors (298424005).

1243433225 is an equidigital number, since it uses as much as digits as its factorization.

1243433225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49737339 (or 49737334 counting only the distinct ones).

The product of its digits is 17280, while the sum is 29.

The square root of 1243433225 is about 35262.3485462894. The cubic root of 1243433225 is about 1075.3276736820.

Adding to 1243433225 its reverse (5223343421), we get a palindrome (6466776646).

The spelling of 1243433225 in words is "one billion, two hundred forty-three million, four hundred thirty-three thousand, two hundred twenty-five".