13525440345 has 40 divisors (see below), whose sum is σ = 24278950080. Its totient is φ = 7203647520.

The previous prime is 13525440323. The next prime is 13525440361. The reversal of 13525440345 is 54304452531.

It is not a de Polignac number, because 13525440345 - 2¹⁹ = 13524916057 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 276700 + ... + 321890.

It is an arithmetic number, because the mean of its divisors is an integer number (606973752).

Almost surely, 2^13525440345 is an apocalyptic number.

13525440345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13525440345 is a deficient number, since it is larger than the sum of its proper divisors (10753509735).

13525440345 is an equidigital number, since it uses as much as digits as its factorization.

13525440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45947 (or 45938 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 13525440345 its reverse (54304452531), we get a palindrome (67829892876).

The spelling of 13525440345 in words is "thirteen billion, five hundred twenty-five million, four hundred forty thousand, three hundred forty-five".