1812725 has 12 divisors (see below), whose sum is σ = 2321280. Its totient is φ = 1402800.

The previous prime is 1812721. The next prime is 1812749. The reversal of 1812725 is 5272181.

It is not a de Polignac number, because 1812725 - 2² = 1812721 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1812694 and 1812703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395 + ... + 1944.

It is an arithmetic number, because the mean of its divisors is an integer number (193440).

2^1812725 is an apocalyptic number.

It is an amenable number.

1812725 is a deficient number, since it is larger than the sum of its proper divisors (508555).

1812725 is a wasteful number, since it uses less digits than its factorization.

1812725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2375 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1812725 is about 1346.3747620926. The cubic root of 1812725 is about 121.9300189894.

The spelling of 1812725 in words is "one million, eight hundred twelve thousand, seven hundred twenty-five".