13225757856 has 24 divisors (see below), whose sum is σ = 34717614624. Its totient is φ = 4408585920.

The previous prime is 13225757807. The next prime is 13225757917. The reversal of 13225757856 is 65875752231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 13225757799 and 13225757808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68884060 + ... + 68884251.

It is an arithmetic number, because the mean of its divisors is an integer number (1446567276).

Almost surely, 2^13225757856 is an apocalyptic number.

13225757856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13225757856 is an abundant number, since it is smaller than the sum of its proper divisors (21491856768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13225757856 is a wasteful number, since it uses less digits than its factorization.

13225757856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137768324 (or 137768316 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 51.

The spelling of 13225757856 in words is "thirteen billion, two hundred twenty-five million, seven hundred fifty-seven thousand, eight hundred fifty-six".