65225891 has 4 divisors (see below), whose sum is σ = 67329984. Its totient is φ = 63121800.

The previous prime is 65225851. The next prime is 65225893. The reversal of 65225891 is 19852256.

65225891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65225891 - 2⁶ = 65225827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65225893) 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 3 ways as a sum of consecutive naturals, for example, 1052000 + ... + 1052061.

It is an arithmetic number, because the mean of its divisors is an integer number (16832496).

Almost surely, 2^65225891 is an apocalyptic number.

65225891 is a deficient number, since it is larger than the sum of its proper divisors (2104093).

65225891 is a wasteful number, since it uses less digits than its factorization.

65225891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104092.

The product of its digits is 43200, while the sum is 38.

The square root of 65225891 is about 8076.2547631931. The cubic root of 65225891 is about 402.5378044041.

The spelling of 65225891 in words is "sixty-five million, two hundred twenty-five thousand, eight hundred ninety-one".