20250580 has 96 divisors (see below), whose sum is σ = 53544960. Its totient is φ = 6272640.

The previous prime is 20250577. The next prime is 20250647. The reversal of 20250580 is 8505202.

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, 61015 + ... + 61345.

It is an arithmetic number, because the mean of its divisors is an integer number (557760).

Almost surely, 2^20250580 is an apocalyptic number.

20250580 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 20250580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26772480).

20250580 is an abundant number, since it is smaller than the sum of its proper divisors (33294380).

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

20250580 is a wasteful number, since it uses less digits than its factorization.

20250580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 20250580 is about 4500.0644439830. The cubic root of 20250580 is about 272.5706911961.

Adding to 20250580 its reverse (8505202), we get a palindrome (28755782).

The spelling of 20250580 in words is "twenty million, two hundred fifty thousand, five hundred eighty".