1888028225 has 12 divisors (see below), whose sum is σ = 2348550204. Its totient is φ = 1505651520.

The previous prime is 1888028183. The next prime is 1888028231. The reversal of 1888028225 is 5228208881.

It can be written as a sum of positive squares in 6 ways, for example, as 246238864 + 1641789361 = 15692^2 + 40519^2 .

It is not a de Polignac number, because 1888028225 - 2²⁰ = 1886979649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111194 + ... + 127043.

It is an arithmetic number, because the mean of its divisors is an integer number (195712517).

Almost surely, 2^1888028225 is an apocalyptic number.

It is an amenable number.

1888028225 is a deficient number, since it is larger than the sum of its proper divisors (460521979).

1888028225 is a wasteful number, since it uses less digits than its factorization.

1888028225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238564 (or 238559 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 44.

The square root of 1888028225 is about 43451.4467538194. The cubic root of 1888028225 is about 1235.9554801590.

The spelling of 1888028225 in words is "one billion, eight hundred eighty-eight million, twenty-eight thousand, two hundred twenty-five".