16605825 has 12 divisors (see below), whose sum is σ = 27455088. Its totient is φ = 8856400.

The previous prime is 16605817. The next prime is 16605851. The reversal of 16605825 is 52850661.

16605825 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16605825 - 2³ = 16605817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110631 + ... + 110780.

It is an arithmetic number, because the mean of its divisors is an integer number (2287924).

Almost surely, 2^16605825 is an apocalyptic number.

16605825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16605825 is a deficient number, since it is larger than the sum of its proper divisors (10849263).

16605825 is a wasteful number, since it uses less digits than its factorization.

16605825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221424 (or 221419 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 16605825 is about 4075.0245398034. The cubic root of 16605825 is about 255.1252748547.

The spelling of 16605825 in words is "sixteen million, six hundred five thousand, eight hundred twenty-five".