125252222252520 has 256 divisors, whose sum is σ = 434043589754880. Its totient is φ = 28577092505600.

The previous prime is 125252222252491. The next prime is 125252222252533. The reversal of 125252222252520 is 25252222252521.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 840595225 + ... + 840744215.

It is an arithmetic number, because the mean of its divisors is an integer number (1695482772480).

Almost surely, 2^{125252222252520} is an apocalyptic number.

125252222252520 is a gapful number since it is divisible by the number (10) 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 125252222252520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217021794877440).

125252222252520 is an abundant number, since it is smaller than the sum of its proper divisors (308791367502360).

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

125252222252520 is a wasteful number, since it uses less digits than its factorization.

125252222252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186496 (or 186492 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 39.

Subtracting from 125252222252520 its reverse (25252222252521), we obtain a palindrome (99999999999999).

The spelling of 125252222252520 in words is "one hundred twenty-five trillion, two hundred fifty-two billion, two hundred twenty-two million, two hundred fifty-two thousand, five hundred twenty".