256752135 has 12 divisors (see below), whose sum is σ = 445037112. Its totient is φ = 136934448.

The previous prime is 256752121. The next prime is 256752157. The reversal of 256752135 is 531257652.

It is not a de Polignac number, because 256752135 - 2⁵ = 256752103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256752135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2852757 + ... + 2852846.

It is an arithmetic number, because the mean of its divisors is an integer number (37086426).

Almost surely, 2^256752135 is an apocalyptic number.

256752135 is a deficient number, since it is larger than the sum of its proper divisors (188284977).

256752135 is a wasteful number, since it uses less digits than its factorization.

256752135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705614 (or 5705611 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 256752135 is about 16023.4869800552. The cubic root of 256752135 is about 635.5816564743.

The spelling of 256752135 in words is "two hundred fifty-six million, seven hundred fifty-two thousand, one hundred thirty-five".