125154120555 has 12 divisors (see below), whose sum is σ = 216933809040. Its totient is φ = 66748864272.

The previous prime is 125154120551. The next prime is 125154120613. The reversal of 125154120555 is 555021451521.

125154120555 is a `hidden beast` number, since 1 + 2 + 51 + 54 + 1 + 2 + 0 + 555 = 666.

It is not a de Polignac number, because 125154120555 - 2² = 125154120551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125154120551) 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 11 ways as a sum of consecutive naturals, for example, 1390601295 + ... + 1390601384.

It is an arithmetic number, because the mean of its divisors is an integer number (18077817420).

Almost surely, 2^125154120555 is an apocalyptic number.

125154120555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125154120555 is a deficient number, since it is larger than the sum of its proper divisors (91779688485).

125154120555 is a wasteful number, since it uses less digits than its factorization.

125154120555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781202690 (or 2781202687 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 125154120555 in words is "one hundred twenty-five billion, one hundred fifty-four million, one hundred twenty thousand, five hundred fifty-five".