125203506 has 8 divisors (see below), whose sum is σ = 250407024. Its totient is φ = 41734500.

The previous prime is 125203501. The next prime is 125203531. The reversal of 125203506 is 605302521.

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

125203506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (125203501) 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, 10433620 + ... + 10433631.

It is an arithmetic number, because the mean of its divisors is an integer number (31300878).

Almost surely, 2^125203506 is an apocalyptic number.

125203506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125203506 is a wasteful number, since it uses less digits than its factorization.

125203506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867256.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 125203506 is about 11189.4372512651. The cubic root of 125203506 is about 500.2711942141.

The spelling of 125203506 in words is "one hundred twenty-five million, two hundred three thousand, five hundred six".