125217115 has 8 divisors (see below), whose sum is σ = 150324048. Its totient is φ = 100131360.

The previous prime is 125217109. The next prime is 125217143. The reversal of 125217115 is 511712521.

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

It is not a de Polignac number, because 125217115 - 2³ = 125217107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125217115.

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 7 ways as a sum of consecutive naturals, for example, 14349 + ... + 21361.

It is an arithmetic number, because the mean of its divisors is an integer number (18790506).

Almost surely, 2^125217115 is an apocalyptic number.

125217115 is a deficient number, since it is larger than the sum of its proper divisors (25106933).

125217115 is an equidigital number, since it uses as much as digits as its factorization.

125217115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589.

The product of its digits is 700, while the sum is 25.

The square root of 125217115 is about 11190.0453529018. The cubic root of 125217115 is about 500.2893192232.

Adding to 125217115 its reverse (511712521), we get a palindrome (636929636).

The spelling of 125217115 in words is "one hundred twenty-five million, two hundred seventeen thousand, one hundred fifteen".