125421535000 has 80 divisors (see below), whose sum is σ = 293997765600. Its totient is φ = 50145552000.

The previous prime is 125421534947. The next prime is 125421535027. The reversal of 125421535000 is 535124521.

125421535000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×125421535000² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125421535000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14540689 + ... + 14549311.

It is an arithmetic number, because the mean of its divisors is an integer number (3674972070).

Almost surely, 2^125421535000 is an apocalyptic number.

125421535000 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 125421535000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146998882800).

125421535000 is an abundant number, since it is smaller than the sum of its proper divisors (168576230600).

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

125421535000 is an equidigital number, since it uses as much as digits as its factorization.

125421535000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11558 (or 11539 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 125421535000 its reverse (535124521), we get a palindrome (125956659521).

The spelling of 125421535000 in words is "one hundred twenty-five billion, four hundred twenty-one million, five hundred thirty-five thousand".