20251224012077 has 2 divisors, whose sum is σ = 20251224012078. Its totient is φ = 20251224012076.

The previous prime is 20251224012037. The next prime is 20251224012079. The reversal of 20251224012077 is 77021042215202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16829800627396 + 3421423384681 = 4102414^2 + 1849709^2 .

It is a cyclic number.

It is not a de Polignac number, because 20251224012077 - 2²⁴ = 20251207234861 is a prime.

It is a super-2 number, since 2×20251224012077² (a number of 27 digits) contains 22 as substring.

Together with 20251224012079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20251224012079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10125612006038 + 10125612006039.

It is an arithmetic number, because the mean of its divisors is an integer number (10125612006039).

Almost surely, 2^{20251224012077} is an apocalyptic number.

It is an amenable number.

20251224012077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20251224012077 is an equidigital number, since it uses as much as digits as its factorization.

20251224012077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 35.

Adding to 20251224012077 its reverse (77021042215202), we get a palindrome (97272266227279).

The spelling of 20251224012077 in words is "twenty trillion, two hundred fifty-one billion, two hundred twenty-four million, twelve thousand, seventy-seven".