1825345 has 4 divisors (see below), whose sum is σ = 2190420. Its totient is φ = 1460272.

The previous prime is 1825337. The next prime is 1825357. The reversal of 1825345 is 5435281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5435281 = 1999 ⋅2719.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 1183744 = 801^2 + 1088^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825345 - 2³ = 1825337 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 182530 + ... + 182539.

It is an arithmetic number, because the mean of its divisors is an integer number (547605).

2^1825345 is an apocalyptic number.

It is an amenable number.

1825345 is a deficient number, since it is larger than the sum of its proper divisors (365075).

1825345 is an equidigital number, since it uses as much as digits as its factorization.

1825345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365074.

The product of its digits is 4800, while the sum is 28.

The square root of 1825345 is about 1351.0532928053. The cubic root of 1825345 is about 122.2123195221.

The spelling of 1825345 in words is "one million, eight hundred twenty-five thousand, three hundred forty-five".