253280785 has 8 divisors (see below), whose sum is σ = 308218176. Its totient is φ = 199770480.

The previous prime is 253280759. The next prime is 253280827. The reversal of 253280785 is 587082352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253280785 - 2⁹ = 253280273 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 356379 + ... + 357088.

It is an arithmetic number, because the mean of its divisors is an integer number (38527272).

Almost surely, 2^253280785 is an apocalyptic number.

It is an amenable number.

253280785 is a deficient number, since it is larger than the sum of its proper divisors (54937391).

253280785 is an equidigital number, since it uses as much as digits as its factorization.

253280785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713543.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 253280785 is about 15914.7976738632. The cubic root of 253280785 is about 632.7042443705.

The spelling of 253280785 in words is "two hundred fifty-three million, two hundred eighty thousand, seven hundred eighty-five".