252443015505 has 32 divisors (see below), whose sum is σ = 448900214400. Its totient is φ = 134602485696.

The previous prime is 252443015471. The next prime is 252443015549. The reversal of 252443015505 is 505510344252.

It is not a de Polignac number, because 252443015505 - 2⁸ = 252443015249 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 252443015505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309927 + ... + 775203.

It is an arithmetic number, because the mean of its divisors is an integer number (14028131700).

Almost surely, 2^252443015505 is an apocalyptic number.

It is an amenable number.

252443015505 is a deficient number, since it is larger than the sum of its proper divisors (196457198895).

252443015505 is a wasteful number, since it uses less digits than its factorization.

252443015505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469310 (or 469304 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 252443015505 its reverse (505510344252), we get a palindrome (757953359757).

The spelling of 252443015505 in words is "two hundred fifty-two billion, four hundred forty-three million, fifteen thousand, five hundred five".