256022653 has 4 divisors (see below), whose sum is σ = 260362080. Its totient is φ = 251683228.

The previous prime is 256022639. The next prime is 256022693. The reversal of 256022653 is 356220652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256022653 - 2⁹ = 256022141 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 (256022603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169625 + ... + 2169742.

It is an arithmetic number, because the mean of its divisors is an integer number (65090520).

Almost surely, 2^256022653 is an apocalyptic number.

It is an amenable number.

256022653 is a deficient number, since it is larger than the sum of its proper divisors (4339427).

256022653 is an equidigital number, since it uses as much as digits as its factorization.

256022653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339426.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 256022653 is about 16000.7078905903. The cubic root of 256022653 is about 634.9791490870.

The spelling of 256022653 in words is "two hundred fifty-six million, twenty-two thousand, six hundred fifty-three".