625198318123 has 2 divisors, whose sum is σ = 625198318124. Its totient is φ = 625198318122.

The previous prime is 625198318051. The next prime is 625198318159. The reversal of 625198318123 is 321813891526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625198318123 - 2¹⁷ = 625198187051 is a prime.

It is not a weakly prime, because it can be changed into another prime (625198318223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312599159061 + 312599159062.

It is an arithmetic number, because the mean of its divisors is an integer number (312599159062).

Almost surely, 2^625198318123 is an apocalyptic number.

625198318123 is a deficient number, since it is larger than the sum of its proper divisors (1).

625198318123 is an equidigital number, since it uses as much as digits as its factorization.

625198318123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 625198318123 in words is "six hundred twenty-five billion, one hundred ninety-eight million, three hundred eighteen thousand, one hundred twenty-three".