16590625 has 12 divisors (see below), whose sum is σ = 20740860. Its totient is φ = 13270000.

The previous prime is 16590619. The next prime is 16590649. The reversal of 16590625 is 52609561.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 16516096 + 74529 = 4064^2 + 273^2 .

It is not a de Polignac number, because 16590625 - 2³ = 16590617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (1728405).

Almost surely, 2^16590625 is an apocalyptic number.

It is an amenable number.

16590625 is a deficient number, since it is larger than the sum of its proper divisors (4150235).

16590625 is an frugal number, since it uses more digits than its factorization.

16590625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334 (or 5314 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 16590625 is about 4073.1590933819. The cubic root of 16590625 is about 255.0474088452.

The spelling of 16590625 in words is "sixteen million, five hundred ninety thousand, six hundred twenty-five".