125454223123 has 4 divisors (see below), whose sum is σ = 128844877840. Its totient is φ = 122063568408.

The previous prime is 125454223117. The next prime is 125454223127. The reversal of 125454223123 is 321322454521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321322454521 = 7013 ⋅45818117.

It is a cyclic number.

It is not a de Polignac number, because 125454223123 - 2¹⁷ = 125454092051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125454223127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695327303 + ... + 1695327376.

It is an arithmetic number, because the mean of its divisors is an integer number (32211219460).

Almost surely, 2^125454223123 is an apocalyptic number.

125454223123 is a deficient number, since it is larger than the sum of its proper divisors (3390654717).

125454223123 is an equidigital number, since it uses as much as digits as its factorization.

125454223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390654716.

The product of its digits is 57600, while the sum is 34.

Adding to 125454223123 its reverse (321322454521), we get a palindrome (446776677644).

The spelling of 125454223123 in words is "one hundred twenty-five billion, four hundred fifty-four million, two hundred twenty-three thousand, one hundred twenty-three".