2018725 has 6 divisors (see below), whose sum is σ = 2503250. Its totient is φ = 1614960.

The previous prime is 2018713. The next prime is 2018729. The reversal of 2018725 is 5278102.

It can be written as a sum of positive squares in 3 ways, for example, as 498436 + 1520289 = 706^2 + 1233^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2018725 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 80749 = 2018725 / (2 + 0 + 1 + 8 + 7 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2018725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40350 + ... + 40399.

2^2018725 is an apocalyptic number.

2018725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2018725 is a deficient number, since it is larger than the sum of its proper divisors (484525).

2018725 is an equidigital number, since it uses as much as digits as its factorization.

2018725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80759 (or 80754 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2018725 is about 1420.8184261193. The cubic root of 2018725 is about 126.3840845808.

The spelling of 2018725 in words is "two million, eighteen thousand, seven hundred twenty-five".