1225350443 has 4 divisors (see below), whose sum is σ = 1226862168. Its totient is φ = 1223838720.

The previous prime is 1225350433. The next prime is 1225350481. The reversal of 1225350443 is 3440535221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3440535221 = 43 ⋅80012447.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225350443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225350433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754646 + ... + 756267.

It is an arithmetic number, because the mean of its divisors is an integer number (306715542).

Almost surely, 2^1225350443 is an apocalyptic number.

1225350443 is a deficient number, since it is larger than the sum of its proper divisors (1511725).

1225350443 is an equidigital number, since it uses as much as digits as its factorization.

1225350443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511724.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1225350443 is about 35005.0059705751. The cubic root of 1225350443 is about 1070.0895033873.

Adding to 1225350443 its reverse (3440535221), we get a palindrome (4665885664).

The spelling of 1225350443 in words is "one billion, two hundred twenty-five million, three hundred fifty thousand, four hundred forty-three".