13525481 has 2 divisors, whose sum is σ = 13525482. Its totient is φ = 13525480.

The previous prime is 13525471. The next prime is 13525487. The reversal of 13525481 is 18452531.

13525481 is nontrivially palindromic in base 5.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11323225 + 2202256 = 3365^2 + 1484^2 .

It is a cyclic number.

It is not a de Polignac number, because 13525481 - 2¹⁸ = 13263337 is a prime.

It is a super-2 number, since 2×13525481² = 365877272562722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13525487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6762740 + 6762741.

It is an arithmetic number, because the mean of its divisors is an integer number (6762741).

Almost surely, 2^13525481 is an apocalyptic number.

It is an amenable number.

13525481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13525481 is an equidigital number, since it uses as much as digits as its factorization.

13525481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 13525481 is about 3677.7005043913. The cubic root of 13525481 is about 238.2598731442.

The spelling of 13525481 in words is "thirteen million, five hundred twenty-five thousand, four hundred eighty-one".