125551510120 has 16 divisors (see below), whose sum is σ = 282490897860. Its totient is φ = 50220604032.

The previous prime is 125551510081. The next prime is 125551510121. The reversal of 125551510120 is 21015155521.

It can be written as a sum of positive squares in 2 ways, for example, as 117922186404 + 7629323716 = 343398^2 + 87346^2 .

It is not an unprimeable number, because it can be changed into a prime (125551510121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1569393837 + ... + 1569393916.

Almost surely, 2^125551510120 is an apocalyptic number.

125551510120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125551510120 is an abundant number, since it is smaller than the sum of its proper divisors (156939387740).

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

125551510120 is a wasteful number, since it uses less digits than its factorization.

125551510120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138787764 (or 3138787760 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 28.

Adding to 125551510120 its reverse (21015155521), we get a palindrome (146566665641).

The spelling of 125551510120 in words is "one hundred twenty-five billion, five hundred fifty-one million, five hundred ten thousand, one hundred twenty".