1985275 has 6 divisors (see below), whose sum is σ = 2461772. Its totient is φ = 1588200.

The previous prime is 1985257. The next prime is 1985279. The reversal of 1985275 is 5725891.

It is not a de Polignac number, because 1985275 - 2¹¹ = 1983227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1985279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39681 + ... + 39730.

2^1985275 is an apocalyptic number.

1985275 is a deficient number, since it is larger than the sum of its proper divisors (476497).

1985275 is an equidigital number, since it uses as much as digits as its factorization.

1985275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79421 (or 79416 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The square root of 1985275 is about 1408.9978708288. The cubic root of 1985275 is about 125.6821374038.

The spelling of 1985275 in words is "one million, nine hundred eighty-five thousand, two hundred seventy-five".