252778000500 has 72 divisors (see below), whose sum is σ = 797430346440. Its totient is φ = 67407465600.

The previous prime is 252778000469. The next prime is 252778000523. The reversal of 252778000500 is 5000877252.

252778000500 is a `hidden beast` number, since 2 + 5 + 2 + 77 + 80 + 0 + 0 + 500 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33495588324 + 219282412176 = 183018^2 + 468276^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28081945 + ... + 28090944.

Almost surely, 2^252778000500 is an apocalyptic number.

252778000500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252778000500 is an abundant number, since it is smaller than the sum of its proper divisors (544652345940).

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

252778000500 is a wasteful number, since it uses less digits than its factorization.

252778000500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56172914 (or 56172899 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

Adding to 252778000500 its reverse (5000877252), we get a palindrome (257778877752).

The spelling of 252778000500 in words is "two hundred fifty-two billion, seven hundred seventy-eight million, five hundred", and thus it is an aban number.