125939105 has 4 divisors (see below), whose sum is σ = 151126932. Its totient is φ = 100751280.

The previous prime is 125939071. The next prime is 125939147. The reversal of 125939105 is 501939521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22733824 + 103205281 = 4768^2 + 10159^2 .

It is not a de Polignac number, because 125939105 - 2⁶ = 125939041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12593906 + ... + 12593915.

It is an arithmetic number, because the mean of its divisors is an integer number (37781733).

Almost surely, 2^125939105 is an apocalyptic number.

It is an amenable number.

125939105 is a deficient number, since it is larger than the sum of its proper divisors (25187827).

125939105 is an equidigital number, since it uses as much as digits as its factorization.

125939105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25187826.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 125939105 is about 11222.2593536239. The cubic root of 125939105 is about 501.2490173135.

The spelling of 125939105 in words is "one hundred twenty-five million, nine hundred thirty-nine thousand, one hundred five".