125213543120 has 60 divisors (see below), whose sum is σ = 307250172900. Its totient is φ = 47449331712.

The previous prime is 125213543089. The next prime is 125213543131. The reversal of 125213543120 is 21345312521.

It can be written as a sum of positive squares in 2 ways, for example, as 24582476944 + 100631066176 = 156788^2 + 317224^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2138945 + ... + 2196704.

It is an arithmetic number, because the mean of its divisors is an integer number (5120836215).

Almost surely, 2^125213543120 is an apocalyptic number.

125213543120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125213543120 is an abundant number, since it is smaller than the sum of its proper divisors (182036629780).

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

125213543120 is a wasteful number, since it uses less digits than its factorization.

125213543120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335700 (or 4335675 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 125213543120 its reverse (21345312521), we get a palindrome (146558855641).

The spelling of 125213543120 in words is "one hundred twenty-five billion, two hundred thirteen million, five hundred forty-three thousand, one hundred twenty".