64500250 has 64 divisors (see below), whose sum is σ = 130890240. Its totient is φ = 23716800.

The previous prime is 64500239. The next prime is 64500251. The reversal of 64500250 is 5200546.

It is not an unprimeable number, because it can be changed into a prime (64500251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175567 + ... + 175933.

It is an arithmetic number, because the mean of its divisors is an integer number (2045160).

Almost surely, 2^64500250 is an apocalyptic number.

64500250 is an abundant number, since it is smaller than the sum of its proper divisors (66389990).

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

64500250 is a wasteful number, since it uses less digits than its factorization.

64500250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 64500250 is about 8031.2047664096. The cubic root of 64500250 is about 401.0394838434.

Adding to 64500250 its reverse (5200546), we get a palindrome (69700796).

The spelling of 64500250 in words is "sixty-four million, five hundred thousand, two hundred fifty".