125021330105 has 32 divisors (see below), whose sum is σ = 174422246400. Its totient is φ = 84247676352.

The previous prime is 125021330089. The next prime is 125021330111. The reversal of 125021330105 is 501033120521.

It is a happy number.

It is not a de Polignac number, because 125021330105 - 2⁴ = 125021330089 is a prime.

It is a super-2 number, since 2×125021330105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7514486 + ... + 7531104.

It is an arithmetic number, because the mean of its divisors is an integer number (5450695200).

Almost surely, 2^125021330105 is an apocalyptic number.

It is an amenable number.

125021330105 is a deficient number, since it is larger than the sum of its proper divisors (49400916295).

125021330105 is a wasteful number, since it uses less digits than its factorization.

125021330105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20333.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 125021330105 its reverse (501033120521), we get a palindrome (626054450626).

The spelling of 125021330105 in words is "one hundred twenty-five billion, twenty-one million, three hundred thirty thousand, one hundred five".