20016025 has 12 divisors (see below), whose sum is σ = 26126800. Its totient is φ = 15169680.

The previous prime is 20016019. The next prime is 20016043. The reversal of 20016025 is 52061002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20016025 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 20595 + ... + 21544.

Almost surely, 2^20016025 is an apocalyptic number.

20016025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20016025 is a deficient number, since it is larger than the sum of its proper divisors (6110775).

20016025 is a wasteful number, since it uses less digits than its factorization.

20016025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42168 (or 42163 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20016025 is about 4473.9272457205. The cubic root of 20016025 is about 271.5142398757.

Adding to 20016025 its reverse (52061002), we get a palindrome (72077027).

The spelling of 20016025 in words is "twenty million, sixteen thousand, twenty-five".