6640250502 has 16 divisors (see below), whose sum is σ = 13294447920. Its totient is φ = 2211092352.

The previous prime is 6640250501. The next prime is 6640250531. The reversal of 6640250502 is 2050520466.

It is a super-2 number, since 2×6640250502² = 88185853458622504008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6640250502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640250501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574927 + ... + 586362.

It is an arithmetic number, because the mean of its divisors is an integer number (830902995).

Almost surely, 2^6640250502 is an apocalyptic number.

6640250502 is an abundant number, since it is smaller than the sum of its proper divisors (6654197418).

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

6640250502 is a wasteful number, since it uses less digits than its factorization.

6640250502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162247.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 6640250502 is about 81487.7322178007. The cubic root of 6640250502 is about 1879.5829109061.

Adding to 6640250502 its reverse (2050520466), we get a palindrome (8690770968).

The spelling of 6640250502 in words is "six billion, six hundred forty million, two hundred fifty thousand, five hundred two".