125000015 has 8 divisors (see below), whose sum is σ = 171428640. Its totient is φ = 85714272.

The previous prime is 125000003. The next prime is 125000077. The reversal of 125000015 is 510000521.

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

It is not a de Polignac number, because 125000015 - 2¹⁸ = 124737871 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1785680 + ... + 1785749.

It is an arithmetic number, because the mean of its divisors is an integer number (21428580).

Almost surely, 2^125000015 is an apocalyptic number.

125000015 is a deficient number, since it is larger than the sum of its proper divisors (46428625).

125000015 is an equidigital number, since it uses as much as digits as its factorization.

125000015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571441.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 125000015 is about 11180.3405583193. The cubic root of 125000015 is about 500.0000200000. Note that the first 4 decimals are identical.

Adding to 125000015 its reverse (510000521), we get a palindrome (635000536).

The spelling of 125000015 in words is "one hundred twenty-five million, fifteen", and thus it is an aban number.