16627925 has 6 divisors (see below), whose sum is σ = 20618658. Its totient is φ = 13302320.

The previous prime is 16627913. The next prime is 16627939. The reversal of 16627925 is 52972661.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4363921 + 12264004 = 2089^2 + 3502^2 .

It is not a de Polignac number, because 16627925 - 2⁴ = 16627909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332534 + ... + 332583.

It is an arithmetic number, because the mean of its divisors is an integer number (3436443).

Almost surely, 2^16627925 is an apocalyptic number.

It is an amenable number.

16627925 is a deficient number, since it is larger than the sum of its proper divisors (3990733).

16627925 is an equidigital number, since it uses as much as digits as its factorization.

16627925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665127 (or 665122 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 16627925 is about 4077.7352783132. The cubic root of 16627925 is about 255.2384032133.

The spelling of 16627925 in words is "sixteen million, six hundred twenty-seven thousand, nine hundred twenty-five".