125123320345 has 8 divisors (see below), whose sum is σ = 152980965576. Its totient is φ = 98210002176.

The previous prime is 125123320277. The next prime is 125123320391. The reversal of 125123320345 is 543023321521.

It can be written as a sum of positive squares in 4 ways, for example, as 1127079184 + 123996241161 = 33572^2 + 352131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125123320345 - 2⁹ = 125123319833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236081472 + ... + 236082001.

It is an arithmetic number, because the mean of its divisors is an integer number (19122620697).

Almost surely, 2^125123320345 is an apocalyptic number.

It is an amenable number.

125123320345 is a deficient number, since it is larger than the sum of its proper divisors (27857645231).

125123320345 is an equidigital number, since it uses as much as digits as its factorization.

125123320345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472163531.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 125123320345 its reverse (543023321521), we get a palindrome (668146641866).

The spelling of 125123320345 in words is "one hundred twenty-five billion, one hundred twenty-three million, three hundred twenty thousand, three hundred forty-five".