1810625 has 10 divisors (see below), whose sum is σ = 2263338. Its totient is φ = 1448000.

The previous prime is 1810609. The next prime is 1810649. The reversal of 1810625 is 5260181.

It can be written as a sum of positive squares in 5 ways, for example, as 1106704 + 703921 = 1052^2 + 839^2 .

It is not a de Polignac number, because 1810625 - 2⁴ = 1810609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1810625.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 824 + ... + 2073.

2^1810625 is an apocalyptic number.

It is an amenable number.

1810625 is a deficient number, since it is larger than the sum of its proper divisors (452713).

1810625 is an frugal number, since it uses more digits than its factorization.

1810625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1810625 is about 1345.5946640798. The cubic root of 1810625 is about 121.8829164264.

The spelling of 1810625 in words is "one million, eight hundred ten thousand, six hundred twenty-five".