125191224 has 64 divisors (see below), whose sum is σ = 351993600. Its totient is φ = 41221728.

The previous prime is 125191193. The next prime is 125191229. The reversal of 125191224 is 422191521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125191229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14437 + ... + 21419.

It is an arithmetic number, because the mean of its divisors is an integer number (5499900).

Almost surely, 2^125191224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125191224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175996800).

125191224 is an abundant number, since it is smaller than the sum of its proper divisors (226802376).

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

125191224 is a wasteful number, since it uses less digits than its factorization.

125191224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081 (or 7071 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 125191224 is about 11188.8884166391. Note that the first 3 decimals coincide. The cubic root of 125191224 is about 500.2548354291.

The spelling of 125191224 in words is "one hundred twenty-five million, one hundred ninety-one thousand, two hundred twenty-four".