20252512 has 48 divisors (see below), whose sum is σ = 47561472. Its totient is φ = 8300160.

The previous prime is 20252509. The next prime is 20252521. The reversal of 20252512 is 21525202.

It is a self number, because there is not a number n which added to its sum of digits gives 20252512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3187 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (990864).

Almost surely, 2^20252512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20252512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23780736).

20252512 is an abundant number, since it is smaller than the sum of its proper divisors (27308960).

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

20252512 is a wasteful number, since it uses less digits than its factorization.

20252512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971 (or 3963 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20252512 is about 4500.2791024558. The cubic root of 20252512 is about 272.5793590932.

Adding to 20252512 its reverse (21525202), we get a palindrome (41777714).

The spelling of 20252512 in words is "twenty million, two hundred fifty-two thousand, five hundred twelve".