20235025247 has 2 divisors, whose sum is σ = 20235025248. Its totient is φ = 20235025246.

The previous prime is 20235025229. The next prime is 20235025267. The reversal of 20235025247 is 74252053202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20235025247 - 2¹² = 20235021151 is a prime.

It is a super-2 number, since 2×20235025247² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20235025267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117512623 + 10117512624.

It is an arithmetic number, because the mean of its divisors is an integer number (10117512624).

Almost surely, 2^20235025247 is an apocalyptic number.

20235025247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20235025247 is an equidigital number, since it uses as much as digits as its factorization.

20235025247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 32.

Adding to 20235025247 its reverse (74252053202), we get a palindrome (94487078449).

The spelling of 20235025247 in words is "twenty billion, two hundred thirty-five million, twenty-five thousand, two hundred forty-seven".