15960025 has 27 divisors (see below), whose sum is σ = 21479869. Its totient is φ = 11761280.

The previous prime is 15960011. The next prime is 15960047. The reversal of 15960025 is 52006951.

The square root of 15960025 is 3995.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 373321 + 15586704 = 611^2 + 3948^2 .

It is not a de Polignac number, because 15960025 - 2⁷ = 15959897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15959975 and 15960002.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 339552 + ... + 339598.

Almost surely, 2^15960025 is an apocalyptic number.

15960025 is the 3995-th square number.

15960025 is the 1998-th centered octagonal number.

It is an amenable number.

15960025 is a deficient number, since it is larger than the sum of its proper divisors (5519844).

15960025 is an equidigital number, since it uses as much as digits as its factorization.

15960025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The cubic root of 15960025 is about 251.7741793657.

Adding to 15960025 its reverse (52006951), we get a palindrome (67966976).

The spelling of 15960025 in words is "fifteen million, nine hundred sixty thousand, twenty-five".