252403105500 has 864 divisors, whose sum is σ = 1043719447680. Its totient is φ = 50103705600.

The previous prime is 252403105481. The next prime is 252403105511. The reversal of 252403105500 is 5501304252.

It is a happy number.

252403105500 is a `hidden beast` number, since 2 + 52 + 4 + 0 + 3 + 105 + 500 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 90498106 + ... + 90500894.

It is an arithmetic number, because the mean of its divisors is an integer number (1208008620).

Almost surely, 2^252403105500 is an apocalyptic number.

252403105500 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 252403105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521859723840).

252403105500 is an abundant number, since it is smaller than the sum of its proper divisors (791316342180).

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

252403105500 is a wasteful number, since it uses less digits than its factorization.

252403105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 252403105500 its reverse (5501304252), we get a palindrome (257904409752).

The spelling of 252403105500 in words is "two hundred fifty-two billion, four hundred three million, one hundred five thousand, five hundred".