641020252 has 12 divisors (see below), whose sum is σ = 1180826920. Its totient is φ = 303641136.

The previous prime is 641020249. The next prime is 641020273. The reversal of 641020252 is 252020146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217163 + ... + 4217314.

Almost surely, 2^641020252 is an apocalyptic number.

It is an amenable number.

641020252 is a deficient number, since it is larger than the sum of its proper divisors (539806668).

641020252 is a wasteful number, since it uses less digits than its factorization.

641020252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434500 (or 8434498 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 641020252 is about 25318.3777521389. The cubic root of 641020252 is about 862.2315633718.

Adding to 641020252 its reverse (252020146), we get a palindrome (893040398).

It can be divided in two parts, 6410 and 20252, that added together give a palindrome (26662).

The spelling of 641020252 in words is "six hundred forty-one million, twenty thousand, two hundred fifty-two".