125122320 has 100 divisors (see below), whose sum is σ = 434590860. Its totient is φ = 33364224.

The previous prime is 125122289. The next prime is 125122321. The reversal of 125122320 is 23221521.

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 95179536 = 5472^2 + 9756^2 .

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 = 125122293 and 125122302.

It is not an unprimeable number, because it can be changed into a prime (125122321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3175 + ... + 16134.

Almost surely, 2^125122320 is an apocalyptic number.

125122320 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 125122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217295430).

125122320 is an abundant number, since it is smaller than the sum of its proper divisors (309468540).

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

125122320 is a wasteful number, since it uses less digits than its factorization.

125122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19334 (or 19319 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 125122320 is about 11185.8088665952. The cubic root of 125122320 is about 500.1630401634.

Adding to 125122320 its reverse (23221521), we get a palindrome (148343841).

The spelling of 125122320 in words is "one hundred twenty-five million, one hundred twenty-two thousand, three hundred twenty".