256752503 has 12 divisors (see below), whose sum is σ = 299002392. Its totient is φ = 219829680.

The previous prime is 256752499. The next prime is 256752539. The reversal of 256752503 is 305257652.

It is not a de Polignac number, because 256752503 - 2² = 256752499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256752553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52388 + ... + 57078.

It is an arithmetic number, because the mean of its divisors is an integer number (24916866).

Almost surely, 2^256752503 is an apocalyptic number.

256752503 is a deficient number, since it is larger than the sum of its proper divisors (42249889).

256752503 is a wasteful number, since it uses less digits than its factorization.

256752503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822 (or 5815 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 256752503 is about 16023.4984631946. The cubic root of 256752503 is about 635.5819601315.

The spelling of 256752503 in words is "two hundred fifty-six million, seven hundred fifty-two thousand, five hundred three".