252185017400 has 24 divisors (see below), whose sum is σ = 586330165920. Its totient is φ = 100874006880.

The previous prime is 252185017387. The next prime is 252185017429. The reversal of 252185017400 is 4710581252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 630462344 + ... + 630462743.

It is an arithmetic number, because the mean of its divisors is an integer number (24430423580).

Almost surely, 2^252185017400 is an apocalyptic number.

252185017400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252185017400 is an abundant number, since it is smaller than the sum of its proper divisors (334145148520).

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

252185017400 is a wasteful number, since it uses less digits than its factorization.

252185017400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260925103 (or 1260925094 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

Adding to 252185017400 its reverse (4710581252), we get a palindrome (256895598652).

The spelling of 252185017400 in words is "two hundred fifty-two billion, one hundred eighty-five million, seventeen thousand, four hundred".