125223020 has 96 divisors (see below), whose sum is σ = 307613376. Its totient is φ = 42393600.

The previous prime is 125223019. The next prime is 125223029. The reversal of 125223020 is 20322521.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 125223020.

It is not an unprimeable number, because it can be changed into a prime (125223029) 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, 180875 + ... + 181565.

It is an arithmetic number, because the mean of its divisors is an integer number (3204306).

Almost surely, 2^125223020 is an apocalyptic number.

125223020 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 125223020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153806688).

125223020 is an abundant number, since it is smaller than the sum of its proper divisors (182390356).

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

125223020 is a wasteful number, since it uses less digits than its factorization.

125223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 125223020 is about 11190.3092003751. The cubic root of 125223020 is about 500.2971833291.

Adding to 125223020 its reverse (20322521), we get a palindrome (145545541).

The spelling of 125223020 in words is "one hundred twenty-five million, two hundred twenty-three thousand, twenty".