131121311122525 has 48 divisors (see below), whose sum is σ = 172460234160000. Its totient is φ = 98551496908800.

The previous prime is 131121311122511. The next prime is 131121311122603. The reversal of 131121311122525 is 525221113121131.

It is a happy number.

It is not a de Polignac number, because 131121311122525 - 2⁴⁵ = 95936939033693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 547160782 + ... + 547400368.

It is an arithmetic number, because the mean of its divisors is an integer number (3592921545000).

Almost surely, 2^{131121311122525} is an apocalyptic number.

It is an amenable number.

131121311122525 is a deficient number, since it is larger than the sum of its proper divisors (41338923037475).

131121311122525 is a wasteful number, since it uses less digits than its factorization.

131121311122525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241894 (or 241889 counting only the distinct ones).

The product of its digits is 3600, while the sum is 31.

Adding to 131121311122525 its reverse (525221113121131), we get a palindrome (656342424243656).

The spelling of 131121311122525 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred eleven million, one hundred twenty-two thousand, five hundred twenty-five".