20425063 has 4 divisors (see below), whose sum is σ = 21083968. Its totient is φ = 19766160.

The previous prime is 20425049. The next prime is 20425091. The reversal of 20425063 is 36052402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329406 + ... + 329467.

It is an arithmetic number, because the mean of its divisors is an integer number (5270992).

Almost surely, 2^20425063 is an apocalyptic number.

20425063 is a deficient number, since it is larger than the sum of its proper divisors (658905).

20425063 is an equidigital number, since it uses as much as digits as its factorization.

20425063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658904.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20425063 is about 4519.4095853330. The cubic root of 20425063 is about 273.3512945101.

Adding to 20425063 its reverse (36052402), we get a palindrome (56477465).

The spelling of 20425063 in words is "twenty million, four hundred twenty-five thousand, sixty-three".