125213305 has 16 divisors (see below), whose sum is σ = 172160640. Its totient is φ = 85640832.

The previous prime is 125213293. The next prime is 125213339. The reversal of 125213305 is 503312521.

It is a cyclic number.

It is not a de Polignac number, because 125213305 - 2⁵ = 125213273 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 9942 + ... + 18688.

It is an arithmetic number, because the mean of its divisors is an integer number (10760040).

Almost surely, 2^125213305 is an apocalyptic number.

It is an amenable number.

125213305 is a deficient number, since it is larger than the sum of its proper divisors (46947335).

125213305 is an equidigital number, since it uses as much as digits as its factorization.

125213305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 125213305 is about 11189.8751110100. The cubic root of 125213305 is about 500.2842450456.

Adding to 125213305 its reverse (503312521), we get a palindrome (628525826).

The spelling of 125213305 in words is "one hundred twenty-five million, two hundred thirteen thousand, three hundred five".