1243114225 has 12 divisors (see below), whose sum is σ = 1551284764. Its totient is φ = 988153920.

The previous prime is 1243114193. The next prime is 1243114237. The reversal of 1243114225 is 5224113421.

It can be written as a sum of positive squares in 6 ways, for example, as 1327104 + 1241787121 = 1152^2 + 35239^2 .

It is not a de Polignac number, because 1243114225 - 2⁵ = 1243114193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1243114225.

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, 154434 + ... + 162283.

Almost surely, 2^1243114225 is an apocalyptic number.

It is an amenable number.

1243114225 is a deficient number, since it is larger than the sum of its proper divisors (308170539).

1243114225 is a wasteful number, since it uses less digits than its factorization.

1243114225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316884 (or 316879 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 1243114225 is about 35257.8250180013. The cubic root of 1243114225 is about 1075.2357081842.

Adding to 1243114225 its reverse (5224113421), we get a palindrome (6467227646).

The spelling of 1243114225 in words is "one billion, two hundred forty-three million, one hundred fourteen thousand, two hundred twenty-five".