1804725 has 36 divisors (see below), whose sum is σ = 3486756. Its totient is φ = 887040.

The previous prime is 1804711. The next prime is 1804763. The reversal of 1804725 is 5274081.

It can be written as a sum of positive squares in 6 ways, for example, as 651249 + 1153476 = 807^2 + 1074^2 .

It is not a de Polignac number, because 1804725 - 2⁴ = 1804709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2617 + ... + 3233.

2^1804725 is an apocalyptic number.

1804725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1804725 is a deficient number, since it is larger than the sum of its proper divisors (1682031).

1804725 is a wasteful number, since it uses less digits than its factorization.

1804725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1804725 is about 1343.4005359534. The cubic root of 1804725 is about 121.7503854483.

The spelling of 1804725 in words is "one million, eight hundred four thousand, seven hundred twenty-five".