252405353544 has 64 divisors (see below), whose sum is σ = 653015183040. Its totient is φ = 81236263680.

The previous prime is 252405353521. The next prime is 252405353593. The reversal of 252405353544 is 445353504252.

It is a junction number, because it is equal to n+sod(n) for n = 252405353496 and 252405353505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968559 + ... + 1201214.

It is an arithmetic number, because the mean of its divisors is an integer number (10203362235).

Almost surely, 2^252405353544 is an apocalyptic number.

252405353544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

252405353544 is an abundant number, since it is smaller than the sum of its proper divisors (400609829496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252405353544 is a wasteful number, since it uses less digits than its factorization.

252405353544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169950 (or 2169946 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 42.

Adding to 252405353544 its reverse (445353504252), we get a palindrome (697758857796).

The spelling of 252405353544 in words is "two hundred fifty-two billion, four hundred five million, three hundred fifty-three thousand, five hundred forty-four".