15330725 has 6 divisors (see below), whose sum is σ = 19010130. Its totient is φ = 12264560.

The previous prime is 15330713. The next prime is 15330751. The reversal of 15330725 is 52703351.

It can be written as a sum of positive squares in 3 ways, for example, as 454276 + 14876449 = 674^2 + 3857^2 .

It is not a de Polignac number, because 15330725 - 2¹⁰ = 15329701 is a prime.

It is a super-2 number, since 2×15330725² = 470062258051250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15330694 and 15330703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306590 + ... + 306639.

It is an arithmetic number, because the mean of its divisors is an integer number (3168355).

Almost surely, 2^15330725 is an apocalyptic number.

It is an amenable number.

15330725 is a deficient number, since it is larger than the sum of its proper divisors (3679405).

15330725 is an equidigital number, since it uses as much as digits as its factorization.

15330725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613239 (or 613234 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 15330725 is about 3915.4469732075. The cubic root of 15330725 is about 248.4205760263.

The spelling of 15330725 in words is "fifteen million, three hundred thirty thousand, seven hundred twenty-five".