2125205555 has 16 divisors (see below), whose sum is σ = 2846790144. Its totient is φ = 1509658080.

The previous prime is 2125205507. The next prime is 2125205567. The reversal of 2125205555 is 5555025212.

It is not a de Polignac number, because 2125205555 - 2⁶ = 2125205491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446939 + ... + 451668.

It is an arithmetic number, because the mean of its divisors is an integer number (177924384).

Almost surely, 2^2125205555 is an apocalyptic number.

2125205555 is a deficient number, since it is larger than the sum of its proper divisors (721584589).

2125205555 is a wasteful number, since it uses less digits than its factorization.

2125205555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898666.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 2125205555 is about 46099.9517895626. The cubic root of 2125205555 is about 1285.6822480935.

The spelling of 2125205555 in words is "two billion, one hundred twenty-five million, two hundred five thousand, five hundred fifty-five".