125550257880 has 128 divisors (see below), whose sum is σ = 380278540800. Its totient is φ = 33158740992.

The previous prime is 125550257869. The next prime is 125550257887. The reversal of 125550257880 is 88752055521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550257887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7274301 + ... + 7291539.

It is an arithmetic number, because the mean of its divisors is an integer number (2970926100).

Almost surely, 2^125550257880 is an apocalyptic number.

125550257880 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 125550257880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190139270400).

125550257880 is an abundant number, since it is smaller than the sum of its proper divisors (254728282920).

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

125550257880 is a wasteful number, since it uses less digits than its factorization.

125550257880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17833 (or 17829 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 48.

The spelling of 125550257880 in words is "one hundred twenty-five billion, five hundred fifty million, two hundred fifty-seven thousand, eight hundred eighty".