125540055 has 24 divisors (see below), whose sum is σ = 222236352. Its totient is φ = 65529024.

The previous prime is 125540047. The next prime is 125540059. The reversal of 125540055 is 550045521.

125540055 is a `hidden beast` number, since 1 + 255 + 400 + 5 + 5 = 666.

It is not a de Polignac number, because 125540055 - 2³ = 125540047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125540059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27564 + ... + 31793.

It is an arithmetic number, because the mean of its divisors is an integer number (9259848).

Almost surely, 2^125540055 is an apocalyptic number.

125540055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125540055 is a deficient number, since it is larger than the sum of its proper divisors (96696297).

125540055 is a wasteful number, since it uses less digits than its factorization.

125540055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59415 (or 59412 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 125540055 is about 11204.4658507222. The cubic root of 125540055 is about 500.7190388041.

Adding to 125540055 its reverse (550045521), we get a palindrome (675585576).

The spelling of 125540055 in words is "one hundred twenty-five million, five hundred forty thousand, fifty-five".