1143253225 has 24 divisors (see below), whose sum is σ = 1502325720. Its totient is φ = 861504000.

The previous prime is 1143253211. The next prime is 1143253259. The reversal of 1143253225 is 5223523411.

It can be written as a sum of positive squares in 12 ways, for example, as 791465689 + 351787536 = 28133^2 + 18756^2 .

It is not a de Polignac number, because 1143253225 - 2¹¹ = 1143251177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143253193 and 1143253202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10495 + ... + 48955.

It is an arithmetic number, because the mean of its divisors is an integer number (62596905).

Almost surely, 2^1143253225 is an apocalyptic number.

It is an amenable number.

1143253225 is a deficient number, since it is larger than the sum of its proper divisors (359072495).

1143253225 is a wasteful number, since it uses less digits than its factorization.

1143253225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38541 (or 38536 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1143253225 is about 33812.0278155570. The cubic root of 1143253225 is about 1045.6366853361.

Adding to 1143253225 its reverse (5223523411), we get a palindrome (6366776636).

The spelling of 1143253225 in words is "one billion, one hundred forty-three million, two hundred fifty-three thousand, two hundred twenty-five".