252520561110 has 64 divisors (see below), whose sum is σ = 624393427392. Its totient is φ = 65312073216.

The previous prime is 252520561087. The next prime is 252520561129. The reversal of 252520561110 is 11165025252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6957 + ... + 710696.

It is an arithmetic number, because the mean of its divisors is an integer number (9756147303).

Almost surely, 2^252520561110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252520561110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312196713696).

252520561110 is an abundant number, since it is smaller than the sum of its proper divisors (371872866282).

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

252520561110 is a wasteful number, since it uses less digits than its factorization.

252520561110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718017.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 252520561110 its reverse (11165025252), we get a palindrome (263685586362).

The spelling of 252520561110 in words is "two hundred fifty-two billion, five hundred twenty million, five hundred sixty-one thousand, one hundred ten".