125745771 has 4 divisors (see below), whose sum is σ = 167661032. Its totient is φ = 83830512.

The previous prime is 125745751. The next prime is 125745773. The reversal of 125745771 is 177547521.

It is a happy number.

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

It is not a de Polignac number, because 125745771 - 2⁹ = 125745259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125745773) 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, 20957626 + ... + 20957631.

It is an arithmetic number, because the mean of its divisors is an integer number (41915258).

Almost surely, 2^125745771 is an apocalyptic number.

125745771 is a deficient number, since it is larger than the sum of its proper divisors (41915261).

125745771 is an equidigital number, since it uses as much as digits as its factorization.

125745771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41915260.

The product of its digits is 68600, while the sum is 39.

The square root of 125745771 is about 11213.6421826274. The cubic root of 125745771 is about 500.9923903530.

The spelling of 125745771 in words is "one hundred twenty-five million, seven hundred forty-five thousand, seven hundred seventy-one".