20025297 has 24 divisors (see below), whose sum is σ = 30663360. Its totient is φ = 12558240.

The previous prime is 20025293. The next prime is 20025307. The reversal of 20025297 is 79252002.

It is a happy number.

It is not a de Polignac number, because 20025297 - 2² = 20025293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20025297.

It is not an unprimeable number, because it can be changed into a prime (20025293) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 30628 + ... + 31274.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^20025297 is an apocalyptic number.

It is an amenable number.

20025297 is a deficient number, since it is larger than the sum of its proper divisors (10638063).

20025297 is a wasteful number, since it uses less digits than its factorization.

20025297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20025297 is about 4474.9633518052. The cubic root of 20025297 is about 271.5561578125.

Adding to 20025297 its reverse (79252002), we get a palindrome (99277299).

The spelling of 20025297 in words is "twenty million, twenty-five thousand, two hundred ninety-seven".