20420524025 has 12 divisors (see below), whose sum is σ = 27623400144. Its totient is φ = 14851290000.

The previous prime is 20420523989. The next prime is 20420524081. The reversal of 20420524025 is 52042502402.

It is not a de Polignac number, because 20420524025 - 2⁸ = 20420523769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20420523985 and 20420524003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37127951 + ... + 37128500.

It is an arithmetic number, because the mean of its divisors is an integer number (2301950012).

Almost surely, 2^20420524025 is an apocalyptic number.

20420524025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20420524025 is a deficient number, since it is larger than the sum of its proper divisors (7202876119).

20420524025 is a wasteful number, since it uses less digits than its factorization.

20420524025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74256472 (or 74256467 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

It can be divided in two parts, 20420 and 524025, that added together give a palindrome (544445).

The spelling of 20420524025 in words is "twenty billion, four hundred twenty million, five hundred twenty-four thousand, twenty-five".