1403825 has 12 divisors (see below), whose sum is σ = 1755468. Its totient is φ = 1113600.

The previous prime is 1403819. The next prime is 1403827. The reversal of 1403825 is 5283041.

It can be written as a sum of positive squares in 6 ways, for example, as 39601 + 1364224 = 199^2 + 1168^2 .

It is not a de Polignac number, because 1403825 - 2⁸ = 1403569 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1403825.

It is not an unprimeable number, because it can be changed into a prime (1403827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5705 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (146289).

2^1403825 is an apocalyptic number.

It is an amenable number.

1403825 is a deficient number, since it is larger than the sum of its proper divisors (351643).

1403825 is a wasteful number, since it uses less digits than its factorization.

1403825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1403825 is about 1184.8312116078. The cubic root of 1403825 is about 111.9706821647.

Adding to 1403825 its reverse (5283041), we get a palindrome (6686866).

The spelling of 1403825 in words is "one million, four hundred three thousand, eight hundred twenty-five".