125507271 has 4 divisors (see below), whose sum is σ = 167343032. Its totient is φ = 83671512.

The previous prime is 125507269. The next prime is 125507323. The reversal of 125507271 is 172705521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172705521 = 3 ⋅57568507.

It is not a de Polignac number, because 125507271 - 2¹ = 125507269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125507171) 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 3 ways as a sum of consecutive naturals, for example, 20917876 + ... + 20917881.

It is an arithmetic number, because the mean of its divisors is an integer number (41835758).

Almost surely, 2^125507271 is an apocalyptic number.

125507271 is a deficient number, since it is larger than the sum of its proper divisors (41835761).

125507271 is an equidigital number, since it uses as much as digits as its factorization.

125507271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41835760.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 125507271 is about 11203.0027671156. The cubic root of 125507271 is about 500.6754484612.

The spelling of 125507271 in words is "one hundred twenty-five million, five hundred seven thousand, two hundred seventy-one".