125120280 has 128 divisors (see below), whose sum is σ = 388177920. Its totient is φ = 32248320.

The previous prime is 125120231. The next prime is 125120287. The reversal of 125120280 is 82021521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125120287) 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, 654985 + ... + 655175.

It is an arithmetic number, because the mean of its divisors is an integer number (3032640).

Almost surely, 2^125120280 is an apocalyptic number.

125120280 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 125120280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194088960).

125120280 is an abundant number, since it is smaller than the sum of its proper divisors (263057640).

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

125120280 is a wasteful number, since it uses less digits than its factorization.

125120280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 125120280 is about 11185.7176792551. The cubic root of 125120280 is about 500.1603219216.

The spelling of 125120280 in words is "one hundred twenty-five million, one hundred twenty thousand, two hundred eighty".