256259002 has 4 divisors (see below), whose sum is σ = 384388506. Its totient is φ = 128129500.

The previous prime is 256258997. The next prime is 256259033. The reversal of 256259002 is 200952652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 230462761 + 25796241 = 15181^2 + 5079^2 .

It is a super-2 number, since 2×256259002² = 131337352212072008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64064749 + ... + 64064752.

Almost surely, 2^256259002 is an apocalyptic number.

256259002 is a deficient number, since it is larger than the sum of its proper divisors (128129504).

256259002 is a wasteful number, since it uses less digits than its factorization.

256259002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128129503.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 256259002 is about 16008.0917663537. The cubic root of 256259002 is about 635.1744840536.

The spelling of 256259002 in words is "two hundred fifty-six million, two hundred fifty-nine thousand, two".