16610625 has 30 divisors (see below), whose sum is σ = 29991962. Its totient is φ = 8856000.

The previous prime is 16610611. The next prime is 16610641. The reversal of 16610625 is 52601661.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 3908529 + 12702096 = 1977^2 + 3564^2 .

It is not a de Polignac number, because 16610625 - 2⁵ = 16610593 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4149 + ... + 7101.

Almost surely, 2^16610625 is an apocalyptic number.

16610625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16610625 is a deficient number, since it is larger than the sum of its proper divisors (13381337).

16610625 is an equidigital number, since it uses as much as digits as its factorization.

16610625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2961 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 16610625 is about 4075.6134507581. The cubic root of 16610625 is about 255.1498542487.

The spelling of 16610625 in words is "sixteen million, six hundred ten thousand, six hundred twenty-five".