1550011205825 has 12 divisors (see below), whose sum is σ = 1922273471088. Its totient is φ = 1239841496400.

The previous prime is 1550011205819. The next prime is 1550011205843. The reversal of 1550011205825 is 5285021100551.

It is not a de Polignac number, because 1550011205825 - 2¹⁰ = 1550011204801 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3997727 + ... + 4368276.

It is an arithmetic number, because the mean of its divisors is an integer number (160189455924).

Almost surely, 2^{1550011205825} is an apocalyptic number.

It is an amenable number.

1550011205825 is a deficient number, since it is larger than the sum of its proper divisors (372262265263).

1550011205825 is an equidigital number, since it uses as much as digits as its factorization.

1550011205825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373424 (or 8373419 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 35.

The spelling of 1550011205825 in words is "one trillion, five hundred fifty billion, eleven million, two hundred five thousand, eight hundred twenty-five".