13530451225 has 6 divisors (see below), whose sum is σ = 16777759550. Its totient is φ = 10824360960.

The previous prime is 13530451159. The next prime is 13530451241. The reversal of 13530451225 is 52215403531.

13530451225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2195016201 + 11335435024 = 46851^2 + 106468^2 .

It is not a de Polignac number, because 13530451225 - 2¹⁵ = 13530418457 is a prime.

It is a super-2 number, since 2×13530451225² (a number of 21 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 270609000 + ... + 270609049.

Almost surely, 2^13530451225 is an apocalyptic number.

It is an amenable number.

13530451225 is a deficient number, since it is larger than the sum of its proper divisors (3247308325).

13530451225 is an equidigital number, since it uses as much as digits as its factorization.

13530451225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541218059 (or 541218054 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 13530451225 its reverse (52215403531), we get a palindrome (65745854756).

The spelling of 13530451225 in words is "thirteen billion, five hundred thirty million, four hundred fifty-one thousand, two hundred twenty-five".