64925280 has 384 divisors, whose sum is σ = 275788800. Its totient is φ = 13934592.

The previous prime is 64925279. The next prime is 64925359. The reversal of 64925280 is 8252946.

It is a happy number.

64925280 is a `hidden beast` number, since 649 + 2 + 5 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574504 + ... + 574616.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^64925280 is an apocalyptic number.

64925280 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 64925280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137894400).

64925280 is an abundant number, since it is smaller than the sum of its proper divisors (210863520).

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

64925280 is a wasteful number, since it uses less digits than its factorization.

64925280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 64925280 is about 8057.6224781259. The cubic root of 64925280 is about 401.9184508228.

The spelling of 64925280 in words is "sixty-four million, nine hundred twenty-five thousand, two hundred eighty".