16539825 has 24 divisors (see below), whose sum is σ = 27685728. Its totient is φ = 8711680.

The previous prime is 16539799. The next prime is 16539839. The reversal of 16539825 is 52893561.

16539825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16539825 - 2⁸ = 16539569 is a prime.

It is a super-2 number, since 2×16539825² = 547131622061250, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4897 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (1153572).

Almost surely, 2^16539825 is an apocalyptic number.

16539825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16539825 is a deficient number, since it is larger than the sum of its proper divisors (11145903).

16539825 is a wasteful number, since it uses less digits than its factorization.

16539825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753 (or 2748 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 16539825 is about 4066.9183665277. The cubic root of 16539825 is about 254.7868268407.

The spelling of 16539825 in words is "sixteen million, five hundred thirty-nine thousand, eight hundred twenty-five".