1225463443 has 4 divisors (see below), whose sum is σ = 1226052720. Its totient is φ = 1224874168.

The previous prime is 1225463429. The next prime is 1225463461. The reversal of 1225463443 is 3443645221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3443645221 = 809 ⋅4256669.

It is a cyclic number.

It is not a de Polignac number, because 1225463443 - 2¹⁷ = 1225332371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225463399 and 1225463408.

It is not an unprimeable number, because it can be changed into a prime (1225463143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291508 + ... + 295681.

It is an arithmetic number, because the mean of its divisors is an integer number (306513180).

Almost surely, 2^1225463443 is an apocalyptic number.

1225463443 is a deficient number, since it is larger than the sum of its proper divisors (589277).

1225463443 is an equidigital number, since it uses as much as digits as its factorization.

1225463443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589276.

The product of its digits is 69120, while the sum is 34.

The square root of 1225463443 is about 35006.6199882251. The cubic root of 1225463443 is about 1070.1223963984.

The spelling of 1225463443 in words is "one billion, two hundred twenty-five million, four hundred sixty-three thousand, four hundred forty-three".