252578102500 has 60 divisors (see below), whose sum is σ = 552717373824. Its totient is φ = 100961812000.

The previous prime is 252578102459. The next prime is 252578102501. The reversal of 252578102500 is 5201875252.

It is a self number, because there is not a number n which added to its sum of digits gives 252578102500.

It is not an unprimeable number, because it can be changed into a prime (252578102501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3683529 + ... + 3751471.

Almost surely, 2^252578102500 is an apocalyptic number.

252578102500 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 252578102500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276358686912).

252578102500 is an abundant number, since it is smaller than the sum of its proper divisors (300139271324).

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

252578102500 is a wasteful number, since it uses less digits than its factorization.

252578102500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69454 (or 69437 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 37.

Adding to 252578102500 its reverse (5201875252), we get a palindrome (257779977752).

The spelling of 252578102500 in words is "two hundred fifty-two billion, five hundred seventy-eight million, one hundred two thousand, five hundred".