1226443025 has 6 divisors (see below), whose sum is σ = 1520789382. Its totient is φ = 981154400.

The previous prime is 1226442991. The next prime is 1226443061. The reversal of 1226443025 is 5203446221.

It can be written as a sum of positive squares in 3 ways, for example, as 365842129 + 860600896 = 19127^2 + 29336^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1226443025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24528836 + ... + 24528885.

It is an arithmetic number, because the mean of its divisors is an integer number (253464897).

Almost surely, 2^1226443025 is an apocalyptic number.

It is an amenable number.

1226443025 is a deficient number, since it is larger than the sum of its proper divisors (294346357).

1226443025 is an equidigital number, since it uses as much as digits as its factorization.

1226443025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49057731 (or 49057726 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1226443025 is about 35020.6085755231. The cubic root of 1226443025 is about 1070.4074568389.

Adding to 1226443025 its reverse (5203446221), we get a palindrome (6429889246).

The spelling of 1226443025 in words is "one billion, two hundred twenty-six million, four hundred forty-three thousand, twenty-five".