1903225 has 6 divisors (see below), whose sum is σ = 2360030. Its totient is φ = 1522560.

The previous prime is 1903207. The next prime is 1903229. The reversal of 1903225 is 5223091.

It can be written as a sum of positive squares in 3 ways, for example, as 434281 + 1468944 = 659^2 + 1212^2 .

It is not a de Polignac number, because 1903225 - 2¹¹ = 1901177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1903196 and 1903205.

It is not an unprimeable number, because it can be changed into a prime (1903229) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 38040 + ... + 38089.

2^1903225 is an apocalyptic number.

It is an amenable number.

1903225 is a deficient number, since it is larger than the sum of its proper divisors (456805).

1903225 is an equidigital number, since it uses as much as digits as its factorization.

1903225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76139 (or 76134 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1903225 is about 1379.5742096749. The cubic root of 1903225 is about 123.9262699046.

It can be divided in two parts, 19032 and 25, that multiplied together give a triangular number (475800 = T₉₇₅).

The spelling of 1903225 in words is "one million, nine hundred three thousand, two hundred twenty-five".