1855625 has 10 divisors (see below), whose sum is σ = 2319570. Its totient is φ = 1484000.

The previous prime is 1855621. The next prime is 1855627. The reversal of 1855625 is 5265581.

It can be written as a sum of positive squares in 5 ways, for example, as 1364224 + 491401 = 1168^2 + 701^2 .

It is not a de Polignac number, because 1855625 - 2² = 1855621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1855591 and 1855600.

It is not an unprimeable number, because it can be changed into a prime (1855621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 860 + ... + 2109.

It is an arithmetic number, because the mean of its divisors is an integer number (231957).

2^1855625 is an apocalyptic number.

It is an amenable number.

1855625 is a deficient number, since it is larger than the sum of its proper divisors (463945).

1855625 is an frugal number, since it uses more digits than its factorization.

1855625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989 (or 2974 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 1855625 is about 1362.2132725825. The cubic root of 1855625 is about 122.8843957544.

It can be divided in two parts, 18556 and 25, that added together give a palindrome (18581).

The spelling of 1855625 in words is "one million, eight hundred fifty-five thousand, six hundred twenty-five".