252224501405 has 4 divisors (see below), whose sum is σ = 302669401692. Its totient is φ = 201779601120.

The previous prime is 252224501393. The next prime is 252224501407. The reversal of 252224501405 is 504105422252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118100820964 + 134123680441 = 343658^2 + 366229^2 .

It is not a de Polignac number, because 252224501405 - 2¹⁸ = 252224239261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252224501407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25222450136 + ... + 25222450145.

It is an arithmetic number, because the mean of its divisors is an integer number (75667350423).

Almost surely, 2^252224501405 is an apocalyptic number.

It is an amenable number.

252224501405 is a deficient number, since it is larger than the sum of its proper divisors (50444900287).

252224501405 is an equidigital number, since it uses as much as digits as its factorization.

252224501405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50444900286.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 252224501405 its reverse (504105422252), we get a palindrome (756329923657).

The spelling of 252224501405 in words is "two hundred fifty-two billion, two hundred twenty-four million, five hundred one thousand, four hundred five".