252450906805 has 16 divisors (see below), whose sum is σ = 303736520304. Its totient is φ = 201431127040.

The previous prime is 252450906781. The next prime is 252450906817. The reversal of 252450906805 is 508609054252.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7776241489 + 244674665316 = 88183^2 + 494646^2 .

It is not a de Polignac number, because 252450906805 - 2²⁵ = 252417352373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2939859 + ... + 3024511.

It is an arithmetic number, because the mean of its divisors is an integer number (18983532519).

Almost surely, 2^252450906805 is an apocalyptic number.

It is an amenable number.

252450906805 is a deficient number, since it is larger than the sum of its proper divisors (51285613499).

252450906805 is an equidigital number, since it uses as much as digits as its factorization.

252450906805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86216.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 252450906805 in words is "two hundred fifty-two billion, four hundred fifty million, nine hundred six thousand, eight hundred five".