13424698225 has 9 divisors (see below), whose sum is σ = 16647344193. Its totient is φ = 10739295120.

The previous prime is 13424698223. The next prime is 13424698237. The reversal of 13424698225 is 52289642431.

The square root of 13424698225 is 115865.

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

It can be written as a sum of positive squares in 4 ways, for example, as 7244222769 + 6180475456 = 85113^2 + 78616^2 .

It is not a de Polignac number, because 13424698225 - 2¹ = 13424698223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424698223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 567739 + ... + 590911.

Almost surely, 2^13424698225 is an apocalyptic number.

13424698225 is the 115865-th square number.

13424698225 is the 57933-rd centered octagonal number.

It is an amenable number.

13424698225 is a deficient number, since it is larger than the sum of its proper divisors (3222645968).

13424698225 is an frugal number, since it uses more digits than its factorization.

13424698225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46356 (or 23178 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 13424698225 in words is "thirteen billion, four hundred twenty-four million, six hundred ninety-eight thousand, two hundred twenty-five".