125220222 has 96 divisors (see below), whose sum is σ = 305049600. Its totient is φ = 37966320.

The previous prime is 125220197. The next prime is 125220229. The reversal of 125220222 is 222022521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 125220195 and 125220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125220229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 985923 + ... + 986049.

It is an arithmetic number, because the mean of its divisors is an integer number (3177600).

Almost surely, 2^125220222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125220222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152524800).

125220222 is an abundant number, since it is smaller than the sum of its proper divisors (179829378).

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

125220222 is a wasteful number, since it uses less digits than its factorization.

125220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 125220222 is about 11190.1841807899. The cubic root of 125220222 is about 500.2934570655.

Adding to 125220222 its reverse (222022521), we get a palindrome (347242743).

The spelling of 125220222 in words is "one hundred twenty-five million, two hundred twenty thousand, two hundred twenty-two".