13664303725 has 6 divisors (see below), whose sum is σ = 16943736650. Its totient is φ = 10931442960.

The previous prime is 13664303671. The next prime is 13664303743. The reversal of 13664303725 is 52730346631.

It can be written as a sum of positive squares in 3 ways, for example, as 140707044 + 13523596681 = 11862^2 + 116291^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13664303725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273286050 + ... + 273286099.

Almost surely, 2^13664303725 is an apocalyptic number.

It is an amenable number.

13664303725 is a deficient number, since it is larger than the sum of its proper divisors (3279432925).

13664303725 is an equidigital number, since it uses as much as digits as its factorization.

13664303725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546572159 (or 546572154 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 13664303725 in words is "thirteen billion, six hundred sixty-four million, three hundred three thousand, seven hundred twenty-five".