20425030 has 16 divisors (see below), whose sum is σ = 36895824. Its totient is φ = 8140960.

The previous prime is 20425021. The next prime is 20425049. The reversal of 20425030 is 3052402.

It is a junction number, because it is equal to n+sod(n) for n = 20424995 and 20425013.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 556 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (2305989).

Almost surely, 2^20425030 is an apocalyptic number.

20425030 is a deficient number, since it is larger than the sum of its proper divisors (16470794).

20425030 is a wasteful number, since it uses less digits than its factorization.

20425030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7271.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20425030 is about 4519.4059344122. The cubic root of 20425030 is about 273.3511472956.

Adding to 20425030 its reverse (3052402), we get a palindrome (23477432).

The spelling of 20425030 in words is "twenty million, four hundred twenty-five thousand, thirty".