65503525 has 6 divisors (see below), whose sum is σ = 81224402. Its totient is φ = 52402800.

The previous prime is 65503519. The next prime is 65503553. The reversal of 65503525 is 52530556.

65503525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 9941409 + 55562116 = 3153^2 + 7454^2 .

It is not a de Polignac number, because 65503525 - 2²¹ = 63406373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1310046 + ... + 1310095.

Almost surely, 2^65503525 is an apocalyptic number.

It is an amenable number.

65503525 is a deficient number, since it is larger than the sum of its proper divisors (15720877).

65503525 is a wasteful number, since it uses less digits than its factorization.

65503525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620151 (or 2620146 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 65503525 is about 8093.4248004167. The cubic root of 65503525 is about 403.1081300153.

The spelling of 65503525 in words is "sixty-five million, five hundred three thousand, five hundred twenty-five".