252404345205 has 48 divisors (see below), whose sum is σ = 442341005184. Its totient is φ = 133134249600.

The previous prime is 252404345201. The next prime is 252404345213. The reversal of 252404345205 is 502543404252.

252404345205 is a `hidden beast` number, since 2 + 5 + 2 + 404 + 3 + 45 + 205 = 666.

It is not a de Polignac number, because 252404345205 - 2² = 252404345201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252404345205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252404345201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1460647 + ... + 1624283.

It is an arithmetic number, because the mean of its divisors is an integer number (9215437608).

Almost surely, 2^252404345205 is an apocalyptic number.

It is an amenable number.

252404345205 is a deficient number, since it is larger than the sum of its proper divisors (189936659979).

252404345205 is a wasteful number, since it uses less digits than its factorization.

252404345205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164026 (or 164023 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 252404345205 its reverse (502543404252), we get a palindrome (754947749457).

The spelling of 252404345205 in words is "two hundred fifty-two billion, four hundred four million, three hundred forty-five thousand, two hundred five".