16253985 has 32 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 7536320.

The previous prime is 16253983. The next prime is 16254001. The reversal of 16253985 is 58935261.

It is not a de Polignac number, because 16253985 - 2¹ = 16253983 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16253983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1654 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (925344).

Almost surely, 2^16253985 is an apocalyptic number.

16253985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16253985 is a deficient number, since it is larger than the sum of its proper divisors (13357023).

16253985 is a wasteful number, since it uses less digits than its factorization.

16253985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

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

The square root of 16253985 is about 4031.6231222673. The cubic root of 16253985 is about 253.3105540845.

The spelling of 16253985 in words is "sixteen million, two hundred fifty-three thousand, nine hundred eighty-five".