1898225 has 12 divisors (see below), whose sum is σ = 2690304. Its totient is φ = 1301520.

The previous prime is 1898209. The next prime is 1898227. The reversal of 1898225 is 5228981.

It is not a de Polignac number, because 1898225 - 2⁴ = 1898209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1898227) 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, 5249 + ... + 5598.

It is an arithmetic number, because the mean of its divisors is an integer number (224192).

2^1898225 is an apocalyptic number.

It is an amenable number.

1898225 is a deficient number, since it is larger than the sum of its proper divisors (792079).

1898225 is a wasteful number, since it uses less digits than its factorization.

1898225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10864 (or 10859 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 1898225 is about 1377.7608645915. The cubic root of 1898225 is about 123.8176516806.

The spelling of 1898225 in words is "one million, eight hundred ninety-eight thousand, two hundred twenty-five".