13355440520525 has 6 divisors (see below), whose sum is σ = 16560746245482. Its totient is φ = 10684352416400.

The previous prime is 13355440520483. The next prime is 13355440520551. The reversal of 13355440520525 is 52502504455331.

13355440520525 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 591098031241 + 12764342489284 = 768829^2 + 3572722^2 .

It is not a de Polignac number, because 13355440520525 - 2³⁸ = 13080562613581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 267108810386 + ... + 267108810435.

It is an arithmetic number, because the mean of its divisors is an integer number (2760124374247).

Almost surely, 2^{13355440520525} is an apocalyptic number.

It is an amenable number.

13355440520525 is a deficient number, since it is larger than the sum of its proper divisors (3205305724957).

13355440520525 is an equidigital number, since it uses as much as digits as its factorization.

13355440520525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534217620831 (or 534217620826 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 44.

Adding to 13355440520525 its reverse (52502504455331), we get a palindrome (65857944975856).

The spelling of 13355440520525 in words is "thirteen trillion, three hundred fifty-five billion, four hundred forty million, five hundred twenty thousand, five hundred twenty-five".