6213240625 has 12 divisors (see below), whose sum is σ = 7766057628. Its totient is φ = 4970590000.

The previous prime is 6213240613. The next prime is 6213240629. The reversal of 6213240625 is 5260423126.

It can be written as a sum of positive squares in 6 ways, for example, as 5872616689 + 340623936 = 76633^2 + 18456^2 .

It is not a de Polignac number, because 6213240625 - 2⁹ = 6213240113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6213240629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 990994 + ... + 997243.

It is an arithmetic number, because the mean of its divisors is an integer number (647171469).

Almost surely, 2^6213240625 is an apocalyptic number.

It is an amenable number.

6213240625 is a deficient number, since it is larger than the sum of its proper divisors (1552817003).

6213240625 is an frugal number, since it uses more digits than its factorization.

6213240625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988262 (or 1988242 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 6213240625 is about 78824.1119518641. Note that the first 3 decimals coincide. The cubic root of 6213240625 is about 1838.3973743205.

The spelling of 6213240625 in words is "six billion, two hundred thirteen million, two hundred forty thousand, six hundred twenty-five".