125170055 has 4 divisors (see below), whose sum is σ = 150204072. Its totient is φ = 100136040.

The previous prime is 125170039. The next prime is 125170063. The reversal of 125170055 is 550071521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550071521 = 313 ⋅1757417.

It is not a de Polignac number, because 125170055 - 2⁴ = 125170039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 12517001 + ... + 12517010.

It is an arithmetic number, because the mean of its divisors is an integer number (37551018).

Almost surely, 2^125170055 is an apocalyptic number.

125170055 is a deficient number, since it is larger than the sum of its proper divisors (25034017).

125170055 is an equidigital number, since it uses as much as digits as its factorization.

125170055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25034016.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 125170055 is about 11187.9423934877. The cubic root of 125170055 is about 500.2266372556.

The spelling of 125170055 in words is "one hundred twenty-five million, one hundred seventy thousand, fifty-five".