1232131225 has 12 divisors (see below), whose sum is σ = 1645369516. Its totient is φ = 909881280.

The previous prime is 1232131211. The next prime is 1232131297. The reversal of 1232131225 is 5221312321.

It can be written as a sum of positive squares in 6 ways, for example, as 2647129 + 1229484096 = 1627^2 + 35064^2 .

It is not a de Polignac number, because 1232131225 - 2²³ = 1223742617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232131196 and 1232131205.

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, 1895262 + ... + 1895911.

Almost surely, 2^1232131225 is an apocalyptic number.

It is an amenable number.

1232131225 is a deficient number, since it is larger than the sum of its proper divisors (413238291).

1232131225 is a wasteful number, since it uses less digits than its factorization.

1232131225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791196 (or 3791191 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1232131225 is about 35101.7268093751. The cubic root of 1232131225 is about 1072.0597425423.

Adding to 1232131225 its reverse (5221312321), we get a palindrome (6453443546).

The spelling of 1232131225 in words is "one billion, two hundred thirty-two million, one hundred thirty-one thousand, two hundred twenty-five".