1798425 has 18 divisors (see below), whose sum is σ = 3221582. Its totient is φ = 959040.

The previous prime is 1798421. The next prime is 1798427. The reversal of 1798425 is 5248971.

It can be written as a sum of positive squares in 3 ways, for example, as 144 + 1798281 = 12^2 + 1341^2 .

It is not a de Polignac number, because 1798425 - 2² = 1798421 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 1798425.

It is not an unprimeable number, because it can be changed into a prime (1798421) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 3772 + ... + 4221.

2^1798425 is an apocalyptic number.

1798425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1798425 is a deficient number, since it is larger than the sum of its proper divisors (1423157).

1798425 is a wasteful number, since it uses less digits than its factorization.

1798425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8009 (or 8001 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1798425 is about 1341.0536902004. The cubic root of 1798425 is about 121.6085500466.

The spelling of 1798425 in words is "one million, seven hundred ninety-eight thousand, four hundred twenty-five".