125454433123 has 2 divisors, whose sum is σ = 125454433124. Its totient is φ = 125454433122.

The previous prime is 125454433109. The next prime is 125454433141. The reversal of 125454433123 is 321334454521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125454433123 is a prime.

It is not a weakly prime, because it can be changed into another prime (125454433523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62727216561 + 62727216562.

It is an arithmetic number, because the mean of its divisors is an integer number (62727216562).

Almost surely, 2^125454433123 is an apocalyptic number.

125454433123 is a deficient number, since it is larger than the sum of its proper divisors (1).

125454433123 is an equidigital number, since it uses as much as digits as its factorization.

125454433123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 37.

Adding to 125454433123 its reverse (321334454521), we get a palindrome (446788887644).

The spelling of 125454433123 in words is "one hundred twenty-five billion, four hundred fifty-four million, four hundred thirty-three thousand, one hundred twenty-three".