253256689 has 16 divisors (see below), whose sum is σ = 295266816. Its totient is φ = 212731200.

The previous prime is 253256677. The next prime is 253256743. The reversal of 253256689 is 986652352.

It is a cyclic number.

It is not a de Polignac number, because 253256689 - 2⁹ = 253256177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253256609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134424 + ... + 136294.

It is an arithmetic number, because the mean of its divisors is an integer number (18454176).

Almost surely, 2^253256689 is an apocalyptic number.

It is an amenable number.

253256689 is a deficient number, since it is larger than the sum of its proper divisors (42010127).

253256689 is a wasteful number, since it uses less digits than its factorization.

253256689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its digits is 777600, while the sum is 46.

The square root of 253256689 is about 15914.0406245554. The cubic root of 253256689 is about 632.6841795177.

The spelling of 253256689 in words is "two hundred fifty-three million, two hundred fifty-six thousand, six hundred eighty-nine".