125671771 has 4 divisors (see below), whose sum is σ = 125734752. Its totient is φ = 125608792.

The previous prime is 125671753. The next prime is 125671781. The reversal of 125671771 is 177176521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125671771 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 125671771.

It is not an unprimeable number, because it can be changed into a prime (125671751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28396 + ... + 32521.

It is an arithmetic number, because the mean of its divisors is an integer number (31433688).

Almost surely, 2^125671771 is an apocalyptic number.

125671771 is a deficient number, since it is larger than the sum of its proper divisors (62981).

125671771 is an equidigital number, since it uses as much as digits as its factorization.

125671771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62980.

The product of its digits is 20580, while the sum is 37.

The square root of 125671771 is about 11210.3421446448. The cubic root of 125671771 is about 500.8940949023.

The spelling of 125671771 in words is "one hundred twenty-five million, six hundred seventy-one thousand, seven hundred seventy-one".