13706555625 has 135 divisors (see below), whose sum is σ = 28908850113. Its totient is φ = 6237756000.

The previous prime is 13706555617. The next prime is 13706555647. The reversal of 13706555625 is 52655560731.

The square root of 13706555625 is 117075.

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

13706555625 is a `hidden beast` number, since 1 + 3 + 70 + 6 + 5 + 556 + 25 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1074593961 + 12631961664 = 32781^2 + 112392^2 .

It is not a de Polignac number, because 13706555625 - 2³ = 13706555617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 61464264 + ... + 61464486.

Almost surely, 2^13706555625 is an apocalyptic number.

13706555625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13706555625 is the 117075-th square number.

13706555625 is the 58538-th centered octagonal number.

It is an amenable number.

13706555625 is an abundant number, since it is smaller than the sum of its proper divisors (15202294488).

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

13706555625 is an frugal number, since it uses more digits than its factorization.

13706555625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The spelling of 13706555625 in words is "thirteen billion, seven hundred six million, five hundred fifty-five thousand, six hundred twenty-five".