1831525 has 12 divisors (see below), whose sum is σ = 2310244. Its totient is φ = 1440000.

The previous prime is 1831523. The next prime is 1831589. The reversal of 1831525 is 5251381.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 972196 + 859329 = 986^2 + 927^2 .

It is not a de Polignac number, because 1831525 - 2¹ = 1831523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

1831525 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1831525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831523) 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, 925 + ... + 2125.

2^1831525 is an apocalyptic number.

It is an amenable number.

1831525 is a deficient number, since it is larger than the sum of its proper divisors (478719).

1831525 is a wasteful number, since it uses less digits than its factorization.

1831525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1267 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1831525 is about 1353.3384646865. The cubic root of 1831525 is about 122.3500873357.

The spelling of 1831525 in words is "one million, eight hundred thirty-one thousand, five hundred twenty-five".