253215011505 has 8 divisors (see below), whose sum is σ = 405144018432. Its totient is φ = 135048006128.

The previous prime is 253215011501. The next prime is 253215011507. The reversal of 253215011505 is 505110512352.

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

It is a cyclic number.

It is not a de Polignac number, because 253215011505 - 2² = 253215011501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253215011501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440500369 + ... + 8440500398.

It is an arithmetic number, because the mean of its divisors is an integer number (50643002304).

Almost surely, 2^253215011505 is an apocalyptic number.

It is an amenable number.

253215011505 is a deficient number, since it is larger than the sum of its proper divisors (151929006927).

253215011505 is a wasteful number, since it uses less digits than its factorization.

253215011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16881000775.

The product of its (nonzero) digits is 7500, while the sum is 30.

Adding to 253215011505 its reverse (505110512352), we get a palindrome (758325523857).

The spelling of 253215011505 in words is "two hundred fifty-three billion, two hundred fifteen million, eleven thousand, five hundred five".