20590025 has 6 divisors (see below), whose sum is σ = 25531662. Its totient is φ = 16472000.

The previous prime is 20589979. The next prime is 20590027. The reversal of 20590025 is 52009502.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 132496 + 20457529 = 364^2 + 4523^2 .

It is not a de Polignac number, because 20590025 - 2⁸ = 20589769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20590027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411776 + ... + 411825.

It is an arithmetic number, because the mean of its divisors is an integer number (4255277).

Almost surely, 2^20590025 is an apocalyptic number.

20590025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20590025 is a deficient number, since it is larger than the sum of its proper divisors (4941637).

20590025 is an equidigital number, since it uses as much as digits as its factorization.

20590025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823611 (or 823606 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 20590025 is about 4537.6232765623. The cubic root of 20590025 is about 274.0852248786.

Adding to 20590025 its reverse (52009502), we get a palindrome (72599527).

The spelling of 20590025 in words is "twenty million, five hundred ninety thousand, twenty-five".