122505000157 has 2 divisors, whose sum is σ = 122505000158. Its totient is φ = 122505000156.

The previous prime is 122505000139. The next prime is 122505000173. The reversal of 122505000157 is 751000505221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121852657476 + 652342681 = 349074^2 + 25541^2 .

It is a cyclic number.

It is not a de Polignac number, because 122505000157 - 2³¹ = 120357516509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122505000757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61252500078 + 61252500079.

It is an arithmetic number, because the mean of its divisors is an integer number (61252500079).

Almost surely, 2^122505000157 is an apocalyptic number.

It is an amenable number.

122505000157 is a deficient number, since it is larger than the sum of its proper divisors (1).

122505000157 is an equidigital number, since it uses as much as digits as its factorization.

122505000157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 28.

Adding to 122505000157 its reverse (751000505221), we get a palindrome (873505505378).

The spelling of 122505000157 in words is "one hundred twenty-two billion, five hundred five million, one hundred fifty-seven", and thus it is an aban number.