248725493257 has 4 divisors (see below), whose sum is σ = 248726815380. Its totient is φ = 248724171136.

The previous prime is 248725493243. The next prime is 248725493299. The reversal of 248725493257 is 752394527842.

248725493257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 150031500921 + 98693992336 = 387339^2 + 314156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248725493257 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248725497257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320332 + ... + 774637.

It is an arithmetic number, because the mean of its divisors is an integer number (62181703845).

Almost surely, 2^248725493257 is an apocalyptic number.

It is an amenable number.

248725493257 is a deficient number, since it is larger than the sum of its proper divisors (1322123).

248725493257 is a wasteful number, since it uses less digits than its factorization.

248725493257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322122.

The product of its digits is 33868800, while the sum is 58.

The spelling of 248725493257 in words is "two hundred forty-eight billion, seven hundred twenty-five million, four hundred ninety-three thousand, two hundred fifty-seven".