20025023437 has 2 divisors, whose sum is σ = 20025023438. Its totient is φ = 20025023436.

The previous prime is 20025023387. The next prime is 20025023441. The reversal of 20025023437 is 73432052002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18272010276 + 1753013161 = 135174^2 + 41869^2 .

It is a cyclic number.

It is not a de Polignac number, because 20025023437 - 2¹⁵ = 20024990669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20025023467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012511718 + 10012511719.

It is an arithmetic number, because the mean of its divisors is an integer number (10012511719).

Almost surely, 2^20025023437 is an apocalyptic number.

It is an amenable number.

20025023437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20025023437 is an equidigital number, since it uses as much as digits as its factorization.

20025023437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

Adding to 20025023437 its reverse (73432052002), we get a palindrome (93457075439).

The spelling of 20025023437 in words is "twenty billion, twenty-five million, twenty-three thousand, four hundred thirty-seven".