125887571 has 2 divisors, whose sum is σ = 125887572. Its totient is φ = 125887570.

The previous prime is 125887547. The next prime is 125887577. The reversal of 125887571 is 175788521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125887571 - 2²² = 121693267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (125887577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62943785 + 62943786.

It is an arithmetic number, because the mean of its divisors is an integer number (62943786).

Almost surely, 2^125887571 is an apocalyptic number.

125887571 is a deficient number, since it is larger than the sum of its proper divisors (1).

125887571 is an equidigital number, since it uses as much as digits as its factorization.

125887571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 44.

The square root of 125887571 is about 11219.9630569802. The cubic root of 125887571 is about 501.1806379936.

The spelling of 125887571 in words is "one hundred twenty-five million, eight hundred eighty-seven thousand, five hundred seventy-one".