1225803005 has 32 divisors (see below), whose sum is σ = 1722110976. Its totient is φ = 820157184.

The previous prime is 1225802999. The next prime is 1225803043. The reversal of 1225803005 is 5003085221.

It is not a de Polignac number, because 1225803005 - 2¹² = 1225798909 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 652127 + ... + 654003.

It is an arithmetic number, because the mean of its divisors is an integer number (53815968).

Almost surely, 2^1225803005 is an apocalyptic number.

It is an amenable number.

1225803005 is a deficient number, since it is larger than the sum of its proper divisors (496307971).

1225803005 is a wasteful number, since it uses less digits than its factorization.

1225803005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1225803005 is about 35011.4696206829. The cubic root of 1225803005 is about 1070.2212268575.

Adding to 1225803005 its reverse (5003085221), we get a palindrome (6228888226).

The spelling of 1225803005 in words is "one billion, two hundred twenty-five million, eight hundred three thousand, five".