13356446225 has 6 divisors (see below), whose sum is σ = 16561993350. Its totient is φ = 10685156960.

The previous prime is 13356446203. The next prime is 13356446227. The reversal of 13356446225 is 52264465331.

It can be written as a sum of positive squares in 3 ways, for example, as 3579389584 + 9777056641 = 59828^2 + 98879^2 .

It is not a de Polignac number, because 13356446225 - 2⁸ = 13356445969 is a prime.

It is a super-2 number, since 2×13356446225² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13356446227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 267128900 + ... + 267128949.

It is an arithmetic number, because the mean of its divisors is an integer number (2760332225).

Almost surely, 2^13356446225 is an apocalyptic number.

It is an amenable number.

13356446225 is a deficient number, since it is larger than the sum of its proper divisors (3205547125).

13356446225 is an equidigital number, since it uses as much as digits as its factorization.

13356446225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534257859 (or 534257854 counting only the distinct ones).

The product of its digits is 518400, while the sum is 41.

The spelling of 13356446225 in words is "thirteen billion, three hundred fifty-six million, four hundred forty-six thousand, two hundred twenty-five".