20525023 has 4 divisors (see below), whose sum is σ = 20607048. Its totient is φ = 20443000.

The previous prime is 20525017. The next prime is 20525053. The reversal of 20525023 is 32052502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32052502 = 2 ⋅16026251.

It is a cyclic number.

It is not a de Polignac number, because 20525023 - 2⁵ = 20524991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40636 + ... + 41137.

It is an arithmetic number, because the mean of its divisors is an integer number (5151762).

Almost surely, 2^20525023 is an apocalyptic number.

20525023 is a deficient number, since it is larger than the sum of its proper divisors (82025).

20525023 is an equidigital number, since it uses as much as digits as its factorization.

20525023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82024.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20525023 is about 4530.4550544068. The cubic root of 20525023 is about 273.7964949556.

Adding to 20525023 its reverse (32052502), we get a palindrome (52577525).

The spelling of 20525023 in words is "twenty million, five hundred twenty-five thousand, twenty-three".