13051521225 has 24 divisors (see below), whose sum is σ = 23976129120. Its totient is φ = 6960810960.

The previous prime is 13051521209. The next prime is 13051521239. The reversal of 13051521225 is 52212515031.

13051521225 is a `hidden beast` number, since 130 + 5 + 1 + 521 + 2 + 2 + 5 = 666.

13051521225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13051521225 - 2⁴ = 13051521209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9667119 + ... + 9668468.

It is an arithmetic number, because the mean of its divisors is an integer number (999005380).

Almost surely, 2^13051521225 is an apocalyptic number.

13051521225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13051521225 is a deficient number, since it is larger than the sum of its proper divisors (10924607895).

13051521225 is a wasteful number, since it uses less digits than its factorization.

13051521225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19335606 (or 19335595 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 13051521225 in words is "thirteen billion, fifty-one million, five hundred twenty-one thousand, two hundred twenty-five".