125280071 has 4 divisors (see below), whose sum is σ = 143177232. Its totient is φ = 107382912.

The previous prime is 125280041. The next prime is 125280073. The reversal of 125280071 is 170082521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 125280071 - 2¹⁰ = 125279047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125280071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125280073) 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 3 ways as a sum of consecutive naturals, for example, 8948570 + ... + 8948583.

It is an arithmetic number, because the mean of its divisors is an integer number (35794308).

Almost surely, 2^125280071 is an apocalyptic number.

125280071 is a deficient number, since it is larger than the sum of its proper divisors (17897161).

125280071 is an equidigital number, since it uses as much as digits as its factorization.

125280071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17897160.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 125280071 is about 11192.8580353724. The cubic root of 125280071 is about 500.3731494497.

The spelling of 125280071 in words is "one hundred twenty-five million, two hundred eighty thousand, seventy-one".