1225559005028 has 6 divisors (see below), whose sum is σ = 2144728258806. Its totient is φ = 612779502512.

The previous prime is 1225559005007. The next prime is 1225559005049. The reversal of 1225559005028 is 8205009555221.

It is an interprime number because it is at equal distance from previous prime (1225559005007) and next prime (1225559005049).

It can be written as a sum of positive squares in only one way, i.e., 873473421604 + 352085583424 = 934598^2 + 593368^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1225559005028.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153194875625 + ... + 153194875632.

It is an arithmetic number, because the mean of its divisors is an integer number (357454709801).

Almost surely, 2^{1225559005028} is an apocalyptic number.

It is an amenable number.

1225559005028 is a deficient number, since it is larger than the sum of its proper divisors (919169253778).

1225559005028 is a wasteful number, since it uses less digits than its factorization.

1225559005028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306389751261 (or 306389751259 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 1225559005028 in words is "one trillion, two hundred twenty-five billion, five hundred fifty-nine million, five thousand, twenty-eight".