125221005513044 has 36 divisors (see below), whose sum is σ = 255467149175700. Its totient is φ = 53549732718720.

The previous prime is 125221005513017. The next prime is 125221005513101. The reversal of 125221005513044 is 440315500122521.

It can be written as a sum of positive squares in 2 ways, for example, as 88365640090000 + 36855365423044 = 9400300^2 + 6070862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125221005512995 and 125221005513013.

It is a congruent number.

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, 692840969 + ... + 693021680.

It is an arithmetic number, because the mean of its divisors is an integer number (7096309699325).

Almost surely, 2^{125221005513044} is an apocalyptic number.

125221005513044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125221005513044 is an abundant number, since it is smaller than the sum of its proper divisors (130246143662656).

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

125221005513044 is a wasteful number, since it uses less digits than its factorization.

125221005513044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385863128 (or 1385863119 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 125221005513044 its reverse (440315500122521), we get a palindrome (565536505635565).

The spelling of 125221005513044 in words is "one hundred twenty-five trillion, two hundred twenty-one billion, five million, five hundred thirteen thousand, forty-four".