1798225 has 24 divisors (see below), whose sum is σ = 2624832. Its totient is φ = 1204800.

The previous prime is 1798211. The next prime is 1798241. The reversal of 1798225 is 5228971.

It is not a de Polignac number, because 1798225 - 2¹¹ = 1796177 is a prime.

It is a super-2 number, since 2×1798225² = 6467226301250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3324 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2^1798225 is an apocalyptic number.

It is an amenable number.

1798225 is a deficient number, since it is larger than the sum of its proper divisors (826607).

1798225 is a wasteful number, since it uses less digits than its factorization.

1798225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 532 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1798225 is about 1340.9791198971. The cubic root of 1798225 is about 121.6040419146.

It can be divided in two parts, 1798 and 225, that multiplied together give a triangular number (404550 = T₈₉₉).

The spelling of 1798225 in words is "one million, seven hundred ninety-eight thousand, two hundred twenty-five".