64025280 has 336 divisors, whose sum is σ = 251057664. Its totient is φ = 14837760.

The previous prime is 64025279. The next prime is 64025293. The reversal of 64025280 is 8252046.

It is a congruent number.

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, 1362217 + ... + 1362263.

Almost surely, 2^64025280 is an apocalyptic number.

64025280 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 64025280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125528832).

64025280 is an abundant number, since it is smaller than the sum of its proper divisors (187032384).

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

64025280 is a wasteful number, since it uses less digits than its factorization.

64025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 64025280 is about 8001.5798440058. The cubic root of 64025280 is about 400.0526597337.

The spelling of 64025280 in words is "sixty-four million, twenty-five thousand, two hundred eighty".