125285515 has 16 divisors (see below), whose sum is σ = 155016288. Its totient is φ = 97134336.

The previous prime is 125285513. The next prime is 125285527. The reversal of 125285515 is 515582521.

It is a cyclic number.

It is not a de Polignac number, because 125285515 - 2¹ = 125285513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125285513) by changing a digit.

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, 51159 + ... + 53551.

It is an arithmetic number, because the mean of its divisors is an integer number (9688518).

Almost surely, 2^125285515 is an apocalyptic number.

125285515 is a deficient number, since it is larger than the sum of its proper divisors (29730773).

125285515 is a wasteful number, since it uses less digits than its factorization.

125285515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718.

The product of its digits is 20000, while the sum is 34.

The square root of 125285515 is about 11193.1012235216. The cubic root of 125285515 is about 500.3803971892.

The spelling of 125285515 in words is "one hundred twenty-five million, two hundred eighty-five thousand, five hundred fifteen".