13521311025 has 48 divisors (see below), whose sum is σ = 22657240320. Its totient is φ = 7114521600.

The previous prime is 13521310981. The next prime is 13521311033. The reversal of 13521311025 is 52011312531.

It is not a de Polignac number, because 13521311025 - 2⁸ = 13521310769 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13521310986 and 13521311004.

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 47 ways as a sum of consecutive naturals, for example, 1966744 + ... + 1973606.

It is an arithmetic number, because the mean of its divisors is an integer number (472025840).

Almost surely, 2^13521311025 is an apocalyptic number.

13521311025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13521311025 is a deficient number, since it is larger than the sum of its proper divisors (9135929295).

13521311025 is a wasteful number, since it uses less digits than its factorization.

13521311025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7226 (or 7221 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 13521311025 its reverse (52011312531), we get a palindrome (65532623556).

The spelling of 13521311025 in words is "thirteen billion, five hundred twenty-one million, three hundred eleven thousand, twenty-five".