16550025 has 12 divisors (see below), whose sum is σ = 27362832. Its totient is φ = 8826640.

The previous prime is 16549999. The next prime is 16550047. The reversal of 16550025 is 52005561.

It is not a de Polignac number, because 16550025 - 2⁸ = 16549769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16549977 and 16550004.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 110259 + ... + 110408.

It is an arithmetic number, because the mean of its divisors is an integer number (2280236).

Almost surely, 2^16550025 is an apocalyptic number.

16550025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16550025 is a deficient number, since it is larger than the sum of its proper divisors (10812807).

16550025 is a wasteful number, since it uses less digits than its factorization.

16550025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220680 (or 220675 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 16550025 is about 4068.1721939957. The cubic root of 16550025 is about 254.8391911914.

Adding to 16550025 its reverse (52005561), we get a palindrome (68555586).

The spelling of 16550025 in words is "sixteen million, five hundred fifty thousand, twenty-five".