641020250 has 64 divisors (see below), whose sum is σ = 1314593280. Its totient is φ = 232603200.

The previous prime is 641020249. The next prime is 641020273. The reversal of 641020250 is 52020146.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190079 + ... + 193421.

It is an arithmetic number, because the mean of its divisors is an integer number (20540520).

Almost surely, 2^641020250 is an apocalyptic number.

641020250 is an abundant number, since it is smaller than the sum of its proper divisors (673573030).

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

641020250 is a wasteful number, since it uses less digits than its factorization.

641020250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 641020250 is about 25318.3777126419. The cubic root of 641020250 is about 862.2315624751.

Adding to 641020250 its reverse (52020146), we get a palindrome (693040396).

The spelling of 641020250 in words is "six hundred forty-one million, twenty thousand, two hundred fifty".