13662103225 has 27 divisors (see below), whose sum is σ = 17188779591. Its totient is φ = 10772121600.

The previous prime is 13662103223. The next prime is 13662103291. The reversal of 13662103225 is 52230126631.

It is a happy number.

The square root of 13662103225 is 116885.

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

It can be written as a sum of positive squares in 13 ways, for example, as 5860974249 + 7801128976 = 76557^2 + 88324^2 .

It is not a de Polignac number, because 13662103225 - 2¹ = 13662103223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13662103223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 56689105 + ... + 56689345.

Almost surely, 2^13662103225 is an apocalyptic number.

13662103225 is the 116885-th square number.

13662103225 is the 58443-rd centered octagonal number.

It is an amenable number.

13662103225 is a deficient number, since it is larger than the sum of its proper divisors (3526676366).

13662103225 is an frugal number, since it uses more digits than its factorization.

13662103225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 13662103225 its reverse (52230126631), we get a palindrome (65892229856).

The spelling of 13662103225 in words is "thirteen billion, six hundred sixty-two million, one hundred three thousand, two hundred twenty-five".