125055305 has 4 divisors (see below), whose sum is σ = 150066372. Its totient is φ = 100044240.

The previous prime is 125055239. The next prime is 125055311. The reversal of 125055305 is 503550521.

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 48177481 + 76877824 = 6941^2 + 8768^2 .

It is not a de Polignac number, because 125055305 - 2¹² = 125051209 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, 12505526 + ... + 12505535.

It is an arithmetic number, because the mean of its divisors is an integer number (37516593).

Almost surely, 2^125055305 is an apocalyptic number.

It is an amenable number.

125055305 is a deficient number, since it is larger than the sum of its proper divisors (25011067).

125055305 is an equidigital number, since it uses as much as digits as its factorization.

125055305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25011066.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 125055305 is about 11182.8129287760. The cubic root of 125055305 is about 500.0737291275.

The spelling of 125055305 in words is "one hundred twenty-five million, fifty-five thousand, three hundred five".