125177971 has 4 divisors (see below), whose sum is σ = 125869744. Its totient is φ = 124486200.

The previous prime is 125177963. The next prime is 125177989. The reversal of 125177971 is 179771521.

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

It is a cyclic number.

It is not a de Polignac number, because 125177971 - 2³ = 125177963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125177471) 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, 345615 + ... + 345976.

It is an arithmetic number, because the mean of its divisors is an integer number (31467436).

Almost surely, 2^125177971 is an apocalyptic number.

125177971 is a deficient number, since it is larger than the sum of its proper divisors (691773).

125177971 is an equidigital number, since it uses as much as digits as its factorization.

125177971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691772.

The product of its digits is 30870, while the sum is 40.

The square root of 125177971 is about 11188.2961616146. The cubic root of 125177971 is about 500.2371821381.

The spelling of 125177971 in words is "one hundred twenty-five million, one hundred seventy-seven thousand, nine hundred seventy-one".