16629725 has 12 divisors (see below), whose sum is σ = 23566944. Its totient is φ = 11403120.

The previous prime is 16629721. The next prime is 16629727. The reversal of 16629725 is 52792661.

It is a happy number.

It is not a de Polignac number, because 16629725 - 2² = 16629721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16629721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47339 + ... + 47688.

It is an arithmetic number, because the mean of its divisors is an integer number (1963912).

Almost surely, 2^16629725 is an apocalyptic number.

It is an amenable number.

16629725 is a deficient number, since it is larger than the sum of its proper divisors (6937219).

16629725 is an equidigital number, since it uses as much as digits as its factorization.

16629725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95044 (or 95039 counting only the distinct ones).

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

The square root of 16629725 is about 4077.9559830876. The cubic root of 16629725 is about 255.2476128722.

The spelling of 16629725 in words is "sixteen million, six hundred twenty-nine thousand, seven hundred twenty-five".