13720722325 has 12 divisors (see below), whose sum is σ = 17015177700. Its totient is φ = 10975621760.

The previous prime is 13720722313. The next prime is 13720722329. The reversal of 13720722325 is 52322702731.

It can be written as a sum of positive squares in 6 ways, for example, as 2796082884 + 10924639441 = 52878^2 + 104521^2 .

It is not a de Polignac number, because 13720722325 - 2⁵ = 13720722293 is a prime.

It is a super-2 number, since 2×13720722325² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720722329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464601 + ... + 493249.

It is an arithmetic number, because the mean of its divisors is an integer number (1417931475).

Almost surely, 2^13720722325 is an apocalyptic number.

It is an amenable number.

13720722325 is a deficient number, since it is larger than the sum of its proper divisors (3294455375).

13720722325 is a wasteful number, since it uses less digits than its factorization.

13720722325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47816 (or 47811 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 13720722325 in words is "thirteen billion, seven hundred twenty million, seven hundred twenty-two thousand, three hundred twenty-five".