125719 has 6 divisors (see below), whose sum is σ = 138320. Its totient is φ = 114180.

The previous prime is 125717. The next prime is 125731. The reversal of 125719 is 917521.

It is not a de Polignac number, because 125719 - 2¹ = 125717 is a prime.

It is a super-2 number, since 2×125719² = 31610533922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 125693 and 125702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399 + ... + 640.

2¹²⁵⁷¹⁹ is an apocalyptic number.

125719 is a deficient number, since it is larger than the sum of its proper divisors (12601).

125719 is a wasteful number, since it uses less digits than its factorization.

125719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1050 counting only the distinct ones).

The product of its digits is 630, while the sum is 25.

The square root of 125719 is about 354.5687521483. The cubic root of 125719 is about 50.0956834434.

The spelling of 125719 in words is "one hundred twenty-five thousand, seven hundred nineteen".