1825573 has 4 divisors (see below), whose sum is σ = 1828288. Its totient is φ = 1822860.

The previous prime is 1825553. The next prime is 1825591. The reversal of 1825573 is 3755281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3755281 = 101 ⋅37181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1825573 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825513) 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 3 ways as a sum of consecutive naturals, for example, 490 + ... + 1972.

It is an arithmetic number, because the mean of its divisors is an integer number (457072).

2^1825573 is an apocalyptic number.

It is an amenable number.

1825573 is a deficient number, since it is larger than the sum of its proper divisors (2715).

1825573 is a wasteful number, since it uses less digits than its factorization.

1825573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714.

The product of its digits is 8400, while the sum is 31.

The square root of 1825573 is about 1351.1376687814. The cubic root of 1825573 is about 122.2174077381.

The spelling of 1825573 in words is "one million, eight hundred twenty-five thousand, five hundred seventy-three".