125122135000 has 80 divisors (see below), whose sum is σ = 298693137600. Its totient is φ = 49104432000.

The previous prime is 125122134971. The next prime is 125122135007. The reversal of 125122135000 is 531221521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125122135007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28921 + ... + 501079.

It is an arithmetic number, because the mean of its divisors is an integer number (3733664220).

Almost surely, 2^125122135000 is an apocalyptic number.

125122135000 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 125122135000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149346568800).

125122135000 is an abundant number, since it is smaller than the sum of its proper divisors (173571002600).

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

125122135000 is an equidigital number, since it uses as much as digits as its factorization.

125122135000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472238 (or 472219 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 125122135000 its reverse (531221521), we get a palindrome (125653356521).

The spelling of 125122135000 in words is "one hundred twenty-five billion, one hundred twenty-two million, one hundred thirty-five thousand".