20052500 has 60 divisors (see below), whose sum is σ = 47300484. Its totient is φ = 7392000.

The previous prime is 20052479. The next prime is 20052521. The reversal of 20052500 is 525002.

It is an interprime number because it is at equal distance from previous prime (20052479) and next prime (20052521).

It can be written as a sum of positive squares in 10 ways, for example, as 20052484 + 16 = 4478^2 + 4^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32192 + ... + 32808.

Almost surely, 2^20052500 is an apocalyptic number.

20052500 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 20052500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23650242).

20052500 is an abundant number, since it is smaller than the sum of its proper divisors (27247984).

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

20052500 is a wasteful number, since it uses less digits than its factorization.

20052500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 20052500 is about 4478.0017865115. The cubic root of 20052500 is about 271.6790656809.

Adding to 20052500 its reverse (525002), we get a palindrome (20577502).

The spelling of 20052500 in words is "twenty million, fifty-two thousand, five hundred".