155125125505 has 16 divisors (see below), whose sum is σ = 213169392000. Its totient is φ = 106158333312.

The previous prime is 155125125503. The next prime is 155125125539. The reversal of 155125125505 is 505521521551.

It is a cyclic number.

It is not a de Polignac number, because 155125125505 - 2¹ = 155125125503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155125125503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423564 + ... + 4458493.

It is an arithmetic number, because the mean of its divisors is an integer number (13323087000).

Almost surely, 2^155125125505 is an apocalyptic number.

It is an amenable number.

155125125505 is a deficient number, since it is larger than the sum of its proper divisors (58044266495).

155125125505 is an equidigital number, since it uses as much as digits as its factorization.

155125125505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882568.

The product of its (nonzero) digits is 62500, while the sum is 37.

The spelling of 155125125505 in words is "one hundred fifty-five billion, one hundred twenty-five million, one hundred twenty-five thousand, five hundred five".