1225176327728 has 10 divisors (see below), whose sum is σ = 2373779135004. Its totient is φ = 612588163856.

The previous prime is 1225176327719. The next prime is 1225176327829. The reversal of 1225176327728 is 8277236715221.

It is a self number, because there is not a number n which added to its sum of digits gives 1225176327728.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38286760226 + ... + 38286760257.

Almost surely, 2^{1225176327728} is an apocalyptic number.

It is an amenable number.

1225176327728 is a deficient number, since it is larger than the sum of its proper divisors (1148602807276).

1225176327728 is an equidigital number, since it uses as much as digits as its factorization.

1225176327728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76573520491 (or 76573520485 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 53.

The spelling of 1225176327728 in words is "one trillion, two hundred twenty-five billion, one hundred seventy-six million, three hundred twenty-seven thousand, seven hundred twenty-eight".