125947791 has 20 divisors (see below), whose sum is σ = 188463792. Its totient is φ = 83822688.

The previous prime is 125947771. The next prime is 125947867. The reversal of 125947791 is 197749521.

It is not a de Polignac number, because 125947791 - 2⁹ = 125947279 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125947711) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70971 + ... + 72723.

Almost surely, 2^125947791 is an apocalyptic number.

125947791 is a deficient number, since it is larger than the sum of its proper divisors (62516001).

125947791 is an equidigital number, since it uses as much as digits as its factorization.

125947791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652 (or 2643 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 125947791 is about 11222.6463456709. The cubic root of 125947791 is about 501.2605407368.

The spelling of 125947791 in words is "one hundred twenty-five million, nine hundred forty-seven thousand, seven hundred ninety-one".