16729656225 has 48 divisors (see below), whose sum is σ = 29350496448. Its totient is φ = 8379351040.

The previous prime is 16729656197. The next prime is 16729656233. The reversal of 16729656225 is 52265692761.

It is a happy number.

16729656225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16729656225 - 2¹² = 16729652129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 581377 + ... + 609473.

It is an arithmetic number, because the mean of its divisors is an integer number (611468676).

Almost surely, 2^16729656225 is an apocalyptic number.

16729656225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16729656225 is a deficient number, since it is larger than the sum of its proper divisors (12620840223).

16729656225 is a wasteful number, since it uses less digits than its factorization.

16729656225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28594 (or 28589 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 16729656225 in words is "sixteen billion, seven hundred twenty-nine million, six hundred fifty-six thousand, two hundred twenty-five".