256133512 has 8 divisors (see below), whose sum is σ = 480250350. Its totient is φ = 128066752.

The previous prime is 256133491. The next prime is 256133551. The reversal of 256133512 is 215331652.

It can be written as a sum of positive squares in only one way, i.e., 168636196 + 87497316 = 12986^2 + 9354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 16008337 + ... + 16008352.

Almost surely, 2^256133512 is an apocalyptic number.

It is an amenable number.

256133512 is a deficient number, since it is larger than the sum of its proper divisors (224116838).

256133512 is a wasteful number, since it uses less digits than its factorization.

256133512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32016695 (or 32016691 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 256133512 is about 16004.1717061521. The cubic root of 256133512 is about 635.0707855039.

The spelling of 256133512 in words is "two hundred fifty-six million, one hundred thirty-three thousand, five hundred twelve".