1225535305 has 8 divisors (see below), whose sum is σ = 1506511944. Its totient is φ = 956515200.

The previous prime is 1225535299. The next prime is 1225535317. The reversal of 1225535305 is 5035355221.

It can be written as a sum of positive squares in 4 ways, for example, as 209902144 + 1015633161 = 14488^2 + 31869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225535305 - 2¹⁹ = 1225011017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2988906 + ... + 2989315.

It is an arithmetic number, because the mean of its divisors is an integer number (188313993).

Almost surely, 2^1225535305 is an apocalyptic number.

It is an amenable number.

1225535305 is a deficient number, since it is larger than the sum of its proper divisors (280976639).

1225535305 is an equidigital number, since it uses as much as digits as its factorization.

1225535305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978267.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 1225535305 is about 35007.6463790413. The cubic root of 1225535305 is about 1070.1433135551.

The spelling of 1225535305 in words is "one billion, two hundred twenty-five million, five hundred thirty-five thousand, three hundred five".