20580025 has 6 divisors (see below), whose sum is σ = 25519262. Its totient is φ = 16464000.

The previous prime is 20580019. The next prime is 20580037. The reversal of 20580025 is 52008502.

It can be written as a sum of positive squares in 3 ways, for example, as 1605289 + 18974736 = 1267^2 + 4356^2 .

It is not a de Polignac number, because 20580025 - 2³ = 20580017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20579978 and 20580005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411576 + ... + 411625.

Almost surely, 2^20580025 is an apocalyptic number.

20580025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20580025 is a deficient number, since it is larger than the sum of its proper divisors (4939237).

20580025 is an equidigital number, since it uses as much as digits as its factorization.

20580025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823211 (or 823206 counting only the distinct ones).

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

The square root of 20580025 is about 4536.5212443016. The cubic root of 20580025 is about 274.0408458474.

Adding to 20580025 its reverse (52008502), we get a palindrome (72588527).

The spelling of 20580025 in words is "twenty million, five hundred eighty thousand, twenty-five".