125521111040024 has 64 divisors (see below), whose sum is σ = 271690230542400. Its totient is φ = 53251686720000.

The previous prime is 125521111040009. The next prime is 125521111040027. The reversal of 125521111040024 is 420040111125521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125521111040027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26675942 + ... + 31026570.

It is an arithmetic number, because the mean of its divisors is an integer number (4245159852225).

Almost surely, 2^{125521111040024} is an apocalyptic number.

125521111040024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125521111040024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135845115271200).

125521111040024 is an abundant number, since it is smaller than the sum of its proper divisors (146169119502376).

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

125521111040024 is a wasteful number, since it uses less digits than its factorization.

125521111040024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355844 (or 4355840 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

Adding to 125521111040024 its reverse (420040111125521), we get a palindrome (545561222165545).

The spelling of 125521111040024 in words is "one hundred twenty-five trillion, five hundred twenty-one billion, one hundred eleven million, forty thousand, twenty-four".