125734591 has 2 divisors, whose sum is σ = 125734592. Its totient is φ = 125734590.

The previous prime is 125734589. The next prime is 125734639. The reversal of 125734591 is 195437521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125734591 - 2¹ = 125734589 is a prime.

Together with 125734589, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125734591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125734561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62867295 + 62867296.

It is an arithmetic number, because the mean of its divisors is an integer number (62867296).

Almost surely, 2^125734591 is an apocalyptic number.

125734591 is a deficient number, since it is larger than the sum of its proper divisors (1).

125734591 is an equidigital number, since it uses as much as digits as its factorization.

125734591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 125734591 is about 11213.1436716025. The cubic root of 125734591 is about 500.9775422435.

The spelling of 125734591 in words is "one hundred twenty-five million, seven hundred thirty-four thousand, five hundred ninety-one".