65565125 has 8 divisors (see below), whose sum is σ = 81825432. Its totient is φ = 52452000.

The previous prime is 65565121. The next prime is 65565131. The reversal of 65565125 is 52156556.

It can be written as a sum of positive squares in 4 ways, for example, as 5997601 + 59567524 = 2449^2 + 7718^2 .

It is not a de Polignac number, because 65565125 - 2² = 65565121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65565121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262136 + ... + 262385.

It is an arithmetic number, because the mean of its divisors is an integer number (10228179).

Almost surely, 2^65565125 is an apocalyptic number.

It is an amenable number.

65565125 is a deficient number, since it is larger than the sum of its proper divisors (16260307).

65565125 is an equidigital number, since it uses as much as digits as its factorization.

65565125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524536 (or 524526 counting only the distinct ones).

The product of its digits is 45000, while the sum is 35.

The square root of 65565125 is about 8097.2294644526. The cubic root of 65565125 is about 403.2344523824.

The spelling of 65565125 in words is "sixty-five million, five hundred sixty-five thousand, one hundred twenty-five".