641314825 has 24 divisors (see below), whose sum is σ = 840946176. Its totient is φ = 484368000.

The previous prime is 641314801. The next prime is 641314829. The reversal of 641314825 is 528413146.

It is not a de Polignac number, because 641314825 - 2²¹ = 639217673 is a prime.

It is a super-2 number, since 2×641314825² = 822569409529561250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641314829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21684 + ... + 41866.

It is an arithmetic number, because the mean of its divisors is an integer number (35039424).

Almost surely, 2^641314825 is an apocalyptic number.

It is an amenable number.

641314825 is a deficient number, since it is larger than the sum of its proper divisors (199631351).

641314825 is a wasteful number, since it uses less digits than its factorization.

641314825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20265 (or 20260 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 641314825 is about 25324.1944590544. The cubic root of 641314825 is about 862.3636191279.

The spelling of 641314825 in words is "six hundred forty-one million, three hundred fourteen thousand, eight hundred twenty-five".