125081019 has 24 divisors (see below), whose sum is σ = 218630880. Its totient is φ = 67269888.

The previous prime is 125081017. The next prime is 125081029. The reversal of 125081019 is 910180521.

It is not a de Polignac number, because 125081019 - 2¹ = 125081017 is a prime.

It is a super-2 number, since 2×125081019² = 31290522628156722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125080983 and 125081001.

It is not an unprimeable number, because it can be changed into a prime (125081017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57324 + ... + 59465.

It is an arithmetic number, because the mean of its divisors is an integer number (9109620).

Almost surely, 2^125081019 is an apocalyptic number.

125081019 is a deficient number, since it is larger than the sum of its proper divisors (93549861).

125081019 is a wasteful number, since it uses less digits than its factorization.

125081019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116819 (or 116816 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 125081019 is about 11183.9625804095. The cubic root of 125081019 is about 500.1080020028.

The spelling of 125081019 in words is "one hundred twenty-five million, eighty-one thousand, nineteen".