1820094725 has 12 divisors (see below), whose sum is σ = 2257446660. Its totient is φ = 1455734400.

The previous prime is 1820094709. The next prime is 1820094737. The reversal of 1820094725 is 5274900281.

It can be written as a sum of positive squares in 6 ways, for example, as 460402849 + 1359691876 = 21457^2 + 36874^2 .

It is not a de Polignac number, because 1820094725 - 2⁴ = 1820094709 is a prime.

It is a congruent 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, 203855 + ... + 212595.

It is an arithmetic number, because the mean of its divisors is an integer number (188120555).

Almost surely, 2^1820094725 is an apocalyptic number.

It is an amenable number.

1820094725 is a deficient number, since it is larger than the sum of its proper divisors (437351935).

1820094725 is an equidigital number, since it uses as much as digits as its factorization.

1820094725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080 (or 17075 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1820094725 is about 42662.5681950817. The cubic root of 1820094725 is about 1220.9503311584.

The spelling of 1820094725 in words is "one billion, eight hundred twenty million, ninety-four thousand, seven hundred twenty-five".