13225920016 has 15 divisors (see below), whose sum is σ = 25626111343. Its totient is φ = 6612730000.

The previous prime is 13225920013. The next prime is 13225920017. The reversal of 13225920016 is 61002952231.

The square root of 13225920016 is 115004.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13225920016.

It is not an unprimeable number, because it can be changed into a prime (13225920013) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 445641 + ... + 474391.

Almost surely, 2^13225920016 is an apocalyptic number.

13225920016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

13225920016 is the 115004-th square number.

It is an amenable number.

13225920016 is a deficient number, since it is larger than the sum of its proper divisors (12400191327).

13225920016 is an frugal number, since it uses more digits than its factorization.

13225920016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57510 (or 28753 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 13225920016 in words is "thirteen billion, two hundred twenty-five million, nine hundred twenty thousand, sixteen".