125012506 has 8 divisors (see below), whose sum is σ = 188713620. Its totient is φ = 62107968.

The previous prime is 125012501. The next prime is 125012507. The reversal of 125012506 is 605210521.

It can be written as a sum of positive squares in 2 ways, for example, as 123010281 + 2002225 = 11091^2 + 1415^2 .

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

It is not an unprimeable number, because it can be changed into a prime (125012501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198751 + ... + 199378.

Almost surely, 2^125012506 is an apocalyptic number.

125012506 is a deficient number, since it is larger than the sum of its proper divisors (63701114).

125012506 is a wasteful number, since it uses less digits than its factorization.

125012506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398288.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 125012506 is about 11180.8991588333. The cubic root of 125012506 is about 500.0166741106.

The spelling of 125012506 in words is "one hundred twenty-five million, twelve thousand, five hundred six".