16138625 has 32 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 12144000.

The previous prime is 16138613. The next prime is 16138667. The reversal of 16138625 is 52683161.

It is a happy number.

It is not a de Polignac number, because 16138625 - 2⁴ = 16138609 is a prime.

It is a Duffinian number.

Its product of digits (8640) is a multiple of the sum of its prime divisors (160).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16138591 and 16138600.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240842 + ... + 240908.

It is an arithmetic number, because the mean of its divisors is an integer number (668304).

Almost surely, 2^16138625 is an apocalyptic number.

It is an amenable number.

16138625 is a deficient number, since it is larger than the sum of its proper divisors (5247103).

16138625 is an equidigital number, since it uses as much as digits as its factorization.

16138625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 16138625 is about 4017.2907537294. The cubic root of 16138625 is about 252.7098539696.

The spelling of 16138625 in words is "sixteen million, one hundred thirty-eight thousand, six hundred twenty-five".