65025553 has 4 divisors (see below), whose sum is σ = 65916388. Its totient is φ = 64134720.

The previous prime is 65025523. The next prime is 65025557. The reversal of 65025553 is 35552056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18948609 + 46076944 = 4353^2 + 6788^2 .

It is a cyclic number.

It is not a de Polignac number, because 65025553 - 2²¹ = 62928401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65025557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445308 + ... + 445453.

It is an arithmetic number, because the mean of its divisors is an integer number (16479097).

Almost surely, 2^65025553 is an apocalyptic number.

It is an amenable number.

65025553 is a deficient number, since it is larger than the sum of its proper divisors (890835).

65025553 is an equidigital number, since it uses as much as digits as its factorization.

65025553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890834.

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

The square root of 65025553 is about 8063.8423223672. The cubic root of 65025553 is about 402.1252569588.

The spelling of 65025553 in words is "sixty-five million, twenty-five thousand, five hundred fifty-three".