125555568 has 80 divisors (see below), whose sum is σ = 333136416. Its totient is φ = 40734720.

The previous prime is 125555567. The next prime is 125555603. The reversal of 125555568 is 865555521.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125555567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400980 + ... + 401292.

Almost surely, 2^125555568 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 125555568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166568208).

125555568 is an abundant number, since it is smaller than the sum of its proper divisors (207580848).

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

125555568 is a wasteful number, since it uses less digits than its factorization.

125555568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 516 counting only the distinct ones).

The product of its digits is 300000, while the sum is 42.

The square root of 125555568 is about 11205.1580979476. The cubic root of 125555568 is about 500.7396625923.

The spelling of 125555568 in words is "one hundred twenty-five million, five hundred fifty-five thousand, five hundred sixty-eight".