13554780625 has 15 divisors (see below), whose sum is σ = 16941691767. Its totient is φ = 10841496000.

The previous prime is 13554780593. The next prime is 13554780661. The reversal of 13554780625 is 52608745531.

The square root of 13554780625 is 116425.

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

It can be written as a sum of positive squares in 7 ways, for example, as 13487802769 + 66977856 = 116137^2 + 8184^2 .

It is not a de Polignac number, because 13554780625 - 2⁵ = 13554780593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2908297 + ... + 2912953.

Almost surely, 2^13554780625 is an apocalyptic number.

13554780625 is the 116425-th square number.

13554780625 is the 58213-rd centered octagonal number.

It is an amenable number.

13554780625 is a deficient number, since it is larger than the sum of its proper divisors (3386911142).

13554780625 is an frugal number, since it uses more digits than its factorization.

13554780625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9334 (or 4662 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 13554780625 in words is "thirteen billion, five hundred fifty-four million, seven hundred eighty thousand, six hundred twenty-five".