125131434156 has 36 divisors (see below), whose sum is σ = 326507831104. Its totient is φ = 40364978400.

The previous prime is 125131434139. The next prime is 125131434229. The reversal of 125131434156 is 651434131521.

125131434156 is a `hidden beast` number, since 1 + 251 + 3 + 14 + 341 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 125131434156.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56061355 + ... + 56063586.

Almost surely, 2^125131434156 is an apocalyptic number.

It is an amenable number.

125131434156 is an abundant number, since it is smaller than the sum of its proper divisors (201376396948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125131434156 is a wasteful number, since it uses less digits than its factorization.

125131434156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112124982 (or 112124977 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 125131434156 its reverse (651434131521), we get a palindrome (776565565677).

The spelling of 125131434156 in words is "one hundred twenty-five billion, one hundred thirty-one million, four hundred thirty-four thousand, one hundred fifty-six".