20025136 has 10 divisors (see below), whose sum is σ = 38798732. Its totient is φ = 10012560.

The previous prime is 20025127. The next prime is 20025139. The reversal of 20025136 is 63152002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20025139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625770 + ... + 625801.

Almost surely, 2^20025136 is an apocalyptic number.

It is an amenable number.

20025136 is a deficient number, since it is larger than the sum of its proper divisors (18773596).

20025136 is a wasteful number, since it uses less digits than its factorization.

20025136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251579 (or 1251573 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20025136 is about 4474.9453627949. The cubic root of 20025136 is about 271.5554300553. Note that the first 3 decimals are identical.

Adding to 20025136 its reverse (63152002), we get a palindrome (83177138).

The spelling of 20025136 in words is "twenty million, twenty-five thousand, one hundred thirty-six".