123525806149 has 2 divisors, whose sum is σ = 123525806150. Its totient is φ = 123525806148.

The previous prime is 123525806119. The next prime is 123525806167. The reversal of 123525806149 is 941608525321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89368113025 + 34157693124 = 298945^2 + 184818^2 .

It is a cyclic number.

It is not a de Polignac number, because 123525806149 - 2¹³ = 123525797957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123525806099 and 123525806108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123525806119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61762903074 + 61762903075.

It is an arithmetic number, because the mean of its divisors is an integer number (61762903075).

Almost surely, 2^123525806149 is an apocalyptic number.

It is an amenable number.

123525806149 is a deficient number, since it is larger than the sum of its proper divisors (1).

123525806149 is an equidigital number, since it uses as much as digits as its factorization.

123525806149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 123525806149 in words is "one hundred twenty-three billion, five hundred twenty-five million, eight hundred six thousand, one hundred forty-nine".