125612506 has 8 divisors (see below), whose sum is σ = 189395604. Its totient is φ = 62480640.

The previous prime is 125612497. The next prime is 125612549. The reversal of 125612506 is 605216521.

It can be written as a sum of positive squares in 2 ways, for example, as 123765625 + 1846881 = 11125^2 + 1359^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 162325 + ... + 163096.

Almost surely, 2^125612506 is an apocalyptic number.

125612506 is a deficient number, since it is larger than the sum of its proper divisors (63783098).

125612506 is a wasteful number, since it uses less digits than its factorization.

125612506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325616.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125612506 is about 11207.6985148602. The cubic root of 125612506 is about 500.8153443711.

The spelling of 125612506 in words is "one hundred twenty-five million, six hundred twelve thousand, five hundred six".