125705719 has 2 divisors, whose sum is σ = 125705720. Its totient is φ = 125705718.

The previous prime is 125705707. The next prime is 125705747. The reversal of 125705719 is 917507521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125705719 - 2¹³ = 125697527 is a prime.

It is a super-2 number, since 2×125705719² = 31603855578613922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125705759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62852859 + 62852860.

It is an arithmetic number, because the mean of its divisors is an integer number (62852860).

Almost surely, 2^125705719 is an apocalyptic number.

125705719 is a deficient number, since it is larger than the sum of its proper divisors (1).

125705719 is an equidigital number, since it uses as much as digits as its factorization.

125705719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 125705719 is about 11211.8561799552. The cubic root of 125705719 is about 500.9391933936.

The spelling of 125705719 in words is "one hundred twenty-five million, seven hundred five thousand, seven hundred nineteen".