65225807280 has 240 divisors, whose sum is σ = 228025717920. Its totient is φ = 17327499264.

The previous prime is 65225807267. The next prime is 65225807287. The reversal of 65225807280 is 8270852256.

65225807280 is a `hidden beast` number, since 6 + 522 + 58 + 0 + 72 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (65225807287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5223124 + ... + 5235596.

It is an arithmetic number, because the mean of its divisors is an integer number (950107158).

Almost surely, 2^65225807280 is an apocalyptic number.

65225807280 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 65225807280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114012858960).

65225807280 is an abundant number, since it is smaller than the sum of its proper divisors (162799910640).

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

65225807280 is a wasteful number, since it uses less digits than its factorization.

65225807280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770 (or 12752 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 65225807280 in words is "sixty-five billion, two hundred twenty-five million, eight hundred seven thousand, two hundred eighty".