1988025 has 24 divisors (see below), whose sum is σ = 3541440. Its totient is φ = 978240.

The previous prime is 1988023. The next prime is 1988033. The reversal of 1988025 is 5208891.

It is a happy number.

It is not a de Polignac number, because 1988025 - 2¹ = 1988023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1988023) 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 23 ways as a sum of consecutive naturals, for example, 45 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (147560).

2^1988025 is an apocalyptic number.

1988025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1988025 is a deficient number, since it is larger than the sum of its proper divisors (1553415).

1988025 is a wasteful number, since it uses less digits than its factorization.

1988025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1988025 is about 1409.9734040045. The cubic root of 1988025 is about 125.7401421998.

The spelling of 1988025 in words is "one million, nine hundred eighty-eight thousand, twenty-five".