125021200 has 30 divisors (see below), whose sum is σ = 300364394. Its totient is φ = 50008320.

The previous prime is 125021189. The next prime is 125021201. The reversal of 125021200 is 2120521.

It can be written as a sum of positive squares in 3 ways, for example, as 34999056 + 90022144 = 5916^2 + 9488^2 .

It is not an unprimeable number, because it can be changed into a prime (125021201) 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 5 ways as a sum of consecutive naturals, for example, 155877 + ... + 156676.

Almost surely, 2^125021200 is an apocalyptic number.

125021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125021200 is an abundant number, since it is smaller than the sum of its proper divisors (175343194).

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

125021200 is a wasteful number, since it uses less digits than its factorization.

125021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312571 (or 312560 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 125021200 is about 11181.2879401257. The cubic root of 125021200 is about 500.0282650688.

Adding to 125021200 its reverse (2120521), we get a palindrome (127141721).

The spelling of 125021200 in words is "one hundred twenty-five million, twenty-one thousand, two hundred".