15965265 has 16 divisors (see below), whose sum is σ = 25833600. Its totient is φ = 8418432.

The previous prime is 15965251. The next prime is 15965267. The reversal of 15965265 is 56256951.

It is not a de Polignac number, because 15965265 - 2⁴ = 15965249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15965267) 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 15 ways as a sum of consecutive naturals, for example, 4645 + ... + 7314.

It is an arithmetic number, because the mean of its divisors is an integer number (1614600).

Almost surely, 2^15965265 is an apocalyptic number.

15965265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15965265 is a deficient number, since it is larger than the sum of its proper divisors (9868335).

15965265 is a wasteful number, since it uses less digits than its factorization.

15965265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056.

The product of its digits is 81000, while the sum is 39.

The square root of 15965265 is about 3995.6557659538. The cubic root of 15965265 is about 251.8017305411.

The spelling of 15965265 in words is "fifteen million, nine hundred sixty-five thousand, two hundred sixty-five".