13420253525 has 18 divisors (see below), whose sum is σ = 19358032770. Its totient is φ = 9202458720.

The previous prime is 13420253503. The next prime is 13420253563. The reversal of 13420253525 is 52535202431.

It can be written as a sum of positive squares in 3 ways, for example, as 1667742244 + 11752511281 = 40838^2 + 108409^2 .

It is not a de Polignac number, because 13420253525 - 2¹⁸ = 13419991381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13420253491 and 13420253500.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 5476430 + ... + 5478879.

It is an arithmetic number, because the mean of its divisors is an integer number (1075446265).

Almost surely, 2^13420253525 is an apocalyptic number.

It is an amenable number.

13420253525 is a deficient number, since it is larger than the sum of its proper divisors (5937779245).

13420253525 is a wasteful number, since it uses less digits than its factorization.

13420253525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10955333 (or 10955321 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 13420253525 its reverse (52535202431), we get a palindrome (65955455956).

The spelling of 13420253525 in words is "thirteen billion, four hundred twenty million, two hundred fifty-three thousand, five hundred twenty-five".