1810525 has 6 divisors (see below), whose sum is σ = 2245082. Its totient is φ = 1448400.

The previous prime is 1810511. The next prime is 1810531. The reversal of 1810525 is 5250181.

It can be written as a sum of positive squares in 3 ways, for example, as 177241 + 1633284 = 421^2 + 1278^2 .

It is not a de Polignac number, because 1810525 - 2⁷ = 1810397 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1810496 and 1810505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36186 + ... + 36235.

2^1810525 is an apocalyptic number.

It is an amenable number.

1810525 is a deficient number, since it is larger than the sum of its proper divisors (434557).

1810525 is an equidigital number, since it uses as much as digits as its factorization.

1810525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72431 (or 72426 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1810525 is about 1345.5575052743. The cubic root of 1810525 is about 121.8806725390.

The spelling of 1810525 in words is "one million, eight hundred ten thousand, five hundred twenty-five".