125135055 has 12 divisors (see below), whose sum is σ = 216900840. Its totient is φ = 66738672.

The previous prime is 125135053. The next prime is 125135071. The reversal of 125135055 is 550531521.

It is not a de Polignac number, because 125135055 - 2¹ = 125135053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125135051) 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 11 ways as a sum of consecutive naturals, for example, 1390345 + ... + 1390434.

It is an arithmetic number, because the mean of its divisors is an integer number (18075070).

Almost surely, 2^125135055 is an apocalyptic number.

125135055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125135055 is a deficient number, since it is larger than the sum of its proper divisors (91765785).

125135055 is a wasteful number, since it uses less digits than its factorization.

125135055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780790 (or 2780787 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 125135055 is about 11186.3781001717. The cubic root of 125135055 is about 500.1800085194.

Adding to 125135055 its reverse (550531521), we get a palindrome (675666576).

The spelling of 125135055 in words is "one hundred twenty-five million, one hundred thirty-five thousand, fifty-five".