1225143232 has 28 divisors (see below), whose sum is σ = 2464456336. Its totient is φ = 604177920.

The previous prime is 1225143221. The next prime is 1225143239. The reversal of 1225143232 is 2323415221.

It is a junction number, because it is equal to n+sod(n) for n = 1225143197 and 1225143206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225143239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126444 + ... + 135787.

Almost surely, 2^1225143232 is an apocalyptic number.

It is an amenable number.

1225143232 is an abundant number, since it is smaller than the sum of its proper divisors (1239313104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225143232 is an equidigital number, since it uses as much as digits as its factorization.

1225143232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262316 (or 262306 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 1225143232 is about 35002.0461116204. The cubic root of 1225143232 is about 1070.0291813744.

Adding to 1225143232 its reverse (2323415221), we get a palindrome (3548558453).

The spelling of 1225143232 in words is "one billion, two hundred twenty-five million, one hundred forty-three thousand, two hundred thirty-two".