125131531444 has 24 divisors (see below), whose sum is σ = 233423254400. Its totient is φ = 58522538880.

The previous prime is 125131531429. The next prime is 125131531453. The reversal of 125131531444 is 444135131521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10414677 + ... + 10426684.

Almost surely, 2^125131531444 is an apocalyptic number.

It is an amenable number.

125131531444 is a deficient number, since it is larger than the sum of its proper divisors (108291722956).

125131531444 is a wasteful number, since it uses less digits than its factorization.

125131531444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841463 (or 20841461 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 125131531444 its reverse (444135131521), we get a palindrome (569266662965).

The spelling of 125131531444 in words is "one hundred twenty-five billion, one hundred thirty-one million, five hundred thirty-one thousand, four hundred forty-four".