125544200000 has 84 divisors (see below), whose sum is σ = 311389030764. Its totient is φ = 50217600000.

The previous prime is 125544199969. The next prime is 125544200027. The reversal of 125544200000 is 2445521.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 79926074944 + 45618125056 = 282712^2 + 213584^2 .

It is a super-2 number, since 2×125544200000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 113861 + ... + 513860.

It is an arithmetic number, because the mean of its divisors is an integer number (3707012271).

Almost surely, 2^125544200000 is an apocalyptic number.

125544200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125544200000 is an abundant number, since it is smaller than the sum of its proper divisors (185844830764).

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

125544200000 is an frugal number, since it uses more digits than its factorization.

125544200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627758 (or 627728 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 125544200000 its reverse (2445521), we get a palindrome (125546645521).

The spelling of 125544200000 in words is "one hundred twenty-five billion, five hundred forty-four million, two hundred thousand".