13660326225 has 72 divisors (see below), whose sum is σ = 30113475392. Its totient is φ = 5764348800.

The previous prime is 13660326223. The next prime is 13660326263. The reversal of 13660326225 is 52262306631.

13660326225 is a `hidden beast` number, since 1 + 3 + 6 + 603 + 26 + 2 + 25 = 666.

It is not a de Polignac number, because 13660326225 - 2¹ = 13660326223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13660326225.

It is not an unprimeable number, because it can be changed into a prime (13660326223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 313111 + ... + 354060.

Almost surely, 2^13660326225 is an apocalyptic number.

13660326225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13660326225 is an abundant number, since it is smaller than the sum of its proper divisors (16453149167).

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

13660326225 is a wasteful number, since it uses less digits than its factorization.

13660326225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667207 (or 667199 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 13660326225 in words is "thirteen billion, six hundred sixty million, three hundred twenty-six thousand, two hundred twenty-five".