125184321 has 6 divisors (see below), whose sum is σ = 180821810. Its totient is φ = 83456208.

The previous prime is 125184313. The next prime is 125184337. The reversal of 125184321 is 123481521.

It can be written as a sum of positive squares in only one way, i.e., 122412096 + 2772225 = 11064^2 + 1665^2 .

It is not a de Polignac number, because 125184321 - 2³ = 125184313 is a prime.

It is a super-3 number, since 3×125184321³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125184221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6954676 + ... + 6954693.

Almost surely, 2^125184321 is an apocalyptic number.

It is an amenable number.

125184321 is a deficient number, since it is larger than the sum of its proper divisors (55637489).

125184321 is a wasteful number, since it uses less digits than its factorization.

125184321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909375 (or 13909372 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 125184321 is about 11188.5799367033. The cubic root of 125184321 is about 500.2456406349.

The spelling of 125184321 in words is "one hundred twenty-five million, one hundred eighty-four thousand, three hundred twenty-one".