65425320 has 192 divisors, whose sum is σ = 226437120. Its totient is φ = 16982784.

The previous prime is 65425307. The next prime is 65425337. The reversal of 65425320 is 2352456.

65425320 is a `hidden beast` number, since 654 + 2 + 5 + 3 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515097 + ... + 515223.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^65425320 is an apocalyptic number.

65425320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65425320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

65425320 is an abundant number, since it is smaller than the sum of its proper divisors (161011800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65425320 is a wasteful number, since it uses less digits than its factorization.

65425320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 65425320 is about 8088.5919664673. The cubic root of 65425320 is about 402.9476418298.

Adding to 65425320 its reverse (2352456), we get a palindrome (67777776).

The spelling of 65425320 in words is "sixty-five million, four hundred twenty-five thousand, three hundred twenty".