125216315 has 12 divisors (see below), whose sum is σ = 174792096. Its totient is φ = 85862448.

The previous prime is 125216291. The next prime is 125216321. The reversal of 125216315 is 513612521.

It is a de Polignac number, because none of the positive numbers 2^k-125216315 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255299 + ... + 255788.

It is an arithmetic number, because the mean of its divisors is an integer number (14566008).

Almost surely, 2^125216315 is an apocalyptic number.

125216315 is a deficient number, since it is larger than the sum of its proper divisors (49575781).

125216315 is an equidigital number, since it uses as much as digits as its factorization.

125216315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511106 (or 511099 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 125216315 is about 11190.0096067877. The cubic root of 125216315 is about 500.2882537876.

Adding to 125216315 its reverse (513612521), we get a palindrome (638828836).

The spelling of 125216315 in words is "one hundred twenty-five million, two hundred sixteen thousand, three hundred fifteen".