16625 has 16 divisors (see below), whose sum is σ = 24960. Its totient is φ = 10800.

The previous prime is 16619. The next prime is 16631. The reversal of 16625 is 52661.

It is an interprime number because it is at equal distance from previous prime (16619) and next prime (16631).

It is a sliding number, since 16625 = 625 + 16000 and 1/625 + 1/16000 = 0.0016625.

It is not a de Polignac number, because 16625 - 2⁶ = 16561 is a prime.

It is a nialpdrome in base 7 and base 12.

It is a junction number, because it is equal to n+sod(n) for n = 16597 and 16606.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 16625.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (1560).

2¹⁶⁶²⁵ is an apocalyptic number.

It is an amenable number.

16625 is a deficient number, since it is larger than the sum of its proper divisors (8335).

16625 is an equidigital number, since it uses as much as digits as its factorization.

16625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41 (or 31 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 16625 is about 128.9379695823. The cubic root of 16625 is about 25.5223436100.

It can be divided in two parts, 166 and 25, that added together give a palindrome (191).

The spelling of 16625 in words is "sixteen thousand, six hundred twenty-five".