65225491 has 4 divisors (see below), whose sum is σ = 65824000. Its totient is φ = 64626984.

The previous prime is 65225483. The next prime is 65225509. The reversal of 65225491 is 19452256.

It is a happy number.

65225491 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 65225491 - 2³ = 65225483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65225411) 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, 299091 + ... + 299308.

It is an arithmetic number, because the mean of its divisors is an integer number (16456000).

Almost surely, 2^65225491 is an apocalyptic number.

65225491 is a deficient number, since it is larger than the sum of its proper divisors (598509).

65225491 is a wasteful number, since it uses less digits than its factorization.

65225491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598508.

The product of its digits is 21600, while the sum is 34.

The square root of 65225491 is about 8076.2299992014. The cubic root of 65225491 is about 402.5369815435.

The spelling of 65225491 in words is "sixty-five million, two hundred twenty-five thousand, four hundred ninety-one".