125365805 has 16 divisors (see below), whose sum is σ = 155947440. Its totient is φ = 96671232.

The previous prime is 125365783. The next prime is 125365813. The reversal of 125365805 is 508563521.

It can be written as a sum of positive squares in 8 ways, for example, as 17330569 + 108035236 = 4163^2 + 10394^2 .

It is not a de Polignac number, because 125365805 - 2¹⁴ = 125349421 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17057 + ... + 23273.

It is an arithmetic number, because the mean of its divisors is an integer number (9746715).

Almost surely, 2^125365805 is an apocalyptic number.

It is an amenable number.

125365805 is a deficient number, since it is larger than the sum of its proper divisors (30581635).

125365805 is a wasteful number, since it uses less digits than its factorization.

125365805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 125365805 is about 11196.6872332847. The cubic root of 125365805 is about 500.4872649914.

The spelling of 125365805 in words is "one hundred twenty-five million, three hundred sixty-five thousand, eight hundred five".