13125444501525 has 24 divisors (see below), whose sum is σ = 21711734005920. Its totient is φ = 6996688971840.

The previous prime is 13125444501517. The next prime is 13125444501527. The reversal of 13125444501525 is 52510544452131.

It is not a de Polignac number, because 13125444501525 - 2³ = 13125444501517 is a prime.

It is a super-2 number, since 2×13125444501525² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125444501527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44202235 + ... + 44498184.

It is an arithmetic number, because the mean of its divisors is an integer number (904655583580).

Almost surely, 2^{13125444501525} is an apocalyptic number.

13125444501525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13125444501525 is a deficient number, since it is larger than the sum of its proper divisors (8586289504395).

13125444501525 is a wasteful number, since it uses less digits than its factorization.

13125444501525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88702405 (or 88702400 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 13125444501525 its reverse (52510544452131), we get a palindrome (65635988953656).

The spelling of 13125444501525 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty-four million, five hundred one thousand, five hundred twenty-five".