256565652 has 24 divisors (see below), whose sum is σ = 684175296. Its totient is φ = 73304448.

The previous prime is 256565629. The next prime is 256565677.

256565652 is nontrivially palindromic in base 10.

256565652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527093 + ... + 1527260.

It is an arithmetic number, because the mean of its divisors is an integer number (28507304).

Almost surely, 2^256565652 is an apocalyptic number.

It is an amenable number.

256565652 is an abundant number, since it is smaller than the sum of its proper divisors (427609644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256565652 is a wasteful number, since it uses less digits than its factorization.

256565652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054367 (or 3054365 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The square root of 256565652 is about 16017.6668713018. Note that the first 3 decimals coincide. The cubic root of 256565652 is about 635.4277416475.

The spelling of 256565652 in words is "two hundred fifty-six million, five hundred sixty-five thousand, six hundred fifty-two".