16197825 has 24 divisors (see below), whose sum is σ = 30607168. Its totient is φ = 7404480.

The previous prime is 16197793. The next prime is 16197827. The reversal of 16197825 is 52879161.

16197825 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16197825 - 2⁵ = 16197793 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

16197825 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (16197827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14902 + ... + 15951.

Almost surely, 2^16197825 is an apocalyptic number.

16197825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16197825 is a deficient number, since it is larger than the sum of its proper divisors (14409343).

16197825 is a wasteful number, since it uses less digits than its factorization.

16197825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30873 (or 30868 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 16197825 is about 4024.6521588828. The cubic root of 16197825 is about 253.0184752192.

The spelling of 16197825 in words is "sixteen million, one hundred ninety-seven thousand, eight hundred twenty-five".