125017506 has 40 divisors (see below), whose sum is σ = 280805184. Its totient is φ = 41572440.

The previous prime is 125017493. The next prime is 125017531. The reversal of 125017506 is 605710521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 125017506.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 101611 + ... + 102833.

Almost surely, 2^125017506 is an apocalyptic number.

125017506 is an abundant number, since it is smaller than the sum of its proper divisors (155787678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125017506 is a wasteful number, since it uses less digits than its factorization.

125017506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 125017506 is about 11181.1227522105. The cubic root of 125017506 is about 500.0233402438.

The spelling of 125017506 in words is "one hundred twenty-five million, seventeen thousand, five hundred six".