248125505 has 4 divisors (see below), whose sum is σ = 297750612. Its totient is φ = 198500400.

The previous prime is 248125477. The next prime is 248125543. The reversal of 248125505 is 505521842.

It is a Cunningham number, because it is equal to 15752²+1.

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 89340304 + 158785201 = 9452^2 + 12601^2 .

It is not a de Polignac number, because 248125505 - 2¹⁶ = 248059969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24812546 + ... + 24812555.

It is an arithmetic number, because the mean of its divisors is an integer number (74437653).

Almost surely, 2^248125505 is an apocalyptic number.

It is an amenable number.

248125505 is a deficient number, since it is larger than the sum of its proper divisors (49625107).

248125505 is an equidigital number, since it uses as much as digits as its factorization.

248125505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49625106.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 248125505 is about 15752.0000317420. Note that the first 4 decimals coincide. The cubic root of 248125505 is about 628.3820962014.

The spelling of 248125505 in words is "two hundred forty-eight million, one hundred twenty-five thousand, five hundred five".