1988225 has 12 divisors (see below), whose sum is σ = 2504304. Its totient is φ = 1565520.

The previous prime is 1988221. The next prime is 1988227. The reversal of 1988225 is 5228891.

It is not a de Polignac number, because 1988225 - 2² = 1988221 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988221) 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, 1082 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (208692).

2^1988225 is an apocalyptic number.

It is an amenable number.

1988225 is a deficient number, since it is larger than the sum of its proper divisors (516079).

1988225 is a wasteful number, since it uses less digits than its factorization.

1988225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1259 counting only the distinct ones).

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

The square root of 1988225 is about 1410.0443255444. The cubic root of 1988225 is about 125.7443586432.

The spelling of 1988225 in words is "one million, nine hundred eighty-eight thousand, two hundred twenty-five".