252020400322 has 8 divisors (see below), whose sum is σ = 378130277196. Its totient is φ = 125976974592.

The previous prime is 252020400257. The next prime is 252020400337. The reversal of 252020400322 is 223004020252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 244035012001 + 7985388321 = 493999^2 + 89361^2 .

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

It is a super-2 number, since 2×252020400322² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252020400293 and 252020400302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16603303 + ... + 16618474.

Almost surely, 2^252020400322 is an apocalyptic number.

252020400322 is a deficient number, since it is larger than the sum of its proper divisors (126109876874).

252020400322 is a wasteful number, since it uses less digits than its factorization.

252020400322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33225572.

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 252020400322 its reverse (223004020252), we get a palindrome (475024420574).

The spelling of 252020400322 in words is "two hundred fifty-two billion, twenty million, four hundred thousand, three hundred twenty-two".