16905359225 has 12 divisors (see below), whose sum is σ = 20964809580. Its totient is φ = 13522891200.

The previous prime is 16905359201. The next prime is 16905359243. The reversal of 16905359225 is 52295350961.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5917917184 + 10987442041 = 76928^2 + 104821^2 .

It is not a de Polignac number, because 16905359225 - 2¹⁴ = 16905342841 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16905359225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261431 + ... + 319619.

It is an arithmetic number, because the mean of its divisors is an integer number (1747067465).

Almost surely, 2^16905359225 is an apocalyptic number.

It is an amenable number.

16905359225 is a deficient number, since it is larger than the sum of its proper divisors (4059450355).

16905359225 is a wasteful number, since it uses less digits than its factorization.

16905359225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69820 (or 69815 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 47.

The spelling of 16905359225 in words is "sixteen billion, nine hundred five million, three hundred fifty-nine thousand, two hundred twenty-five".