252500324440 has 192 divisors, whose sum is σ = 740080108800. Its totient is φ = 75706016256.

The previous prime is 252500324423. The next prime is 252500324449. The reversal of 252500324440 is 44423005252.

It is a super-2 number, since 2×252500324440² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252500324449) 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, 758659 + ... + 1039501.

It is an arithmetic number, because the mean of its divisors is an integer number (3854583900).

Almost surely, 2^252500324440 is an apocalyptic number.

252500324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252500324440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370040054400).

252500324440 is an abundant number, since it is smaller than the sum of its proper divisors (487579784360).

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

252500324440 is a wasteful number, since it uses less digits than its factorization.

252500324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280906 (or 280889 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 252500324440 its reverse (44423005252), we get a palindrome (296923329692).

The spelling of 252500324440 in words is "two hundred fifty-two billion, five hundred million, three hundred twenty-four thousand, four hundred forty".