1801625 has 32 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 1176000.

The previous prime is 1801619. The next prime is 1801669. The reversal of 1801625 is 5261081.

It is not a de Polignac number, because 1801625 - 2¹⁴ = 1785241 is a prime.

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 1801625.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25340 + ... + 25410.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1801625 is an apocalyptic number.

It is an amenable number.

1801625 is a deficient number, since it is larger than the sum of its proper divisors (894055).

1801625 is an equidigital number, since it uses as much as digits as its factorization.

1801625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

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

The square root of 1801625 is about 1342.2462516245. The cubic root of 1801625 is about 121.6806347467.

The spelling of 1801625 in words is "one million, eight hundred one thousand, six hundred twenty-five".