6558655225 has 24 divisors (see below), whose sum is σ = 8419383000. Its totient is φ = 5062256640.

The previous prime is 6558655223. The next prime is 6558655237. The reversal of 6558655225 is 5225568556.

It can be written as a sum of positive squares in 12 ways, for example, as 3316377744 + 3242277481 = 57588^2 + 56941^2 .

It is not a de Polignac number, because 6558655225 - 2¹ = 6558655223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6558655223) 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, 1367131 + ... + 1371919.

It is an arithmetic number, because the mean of its divisors is an integer number (350807625).

Almost surely, 2^6558655225 is an apocalyptic number.

It is an amenable number.

6558655225 is a deficient number, since it is larger than the sum of its proper divisors (1860727775).

6558655225 is a wasteful number, since it uses less digits than its factorization.

6558655225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717 (or 6712 counting only the distinct ones).

The product of its digits is 3600000, while the sum is 49.

The square root of 6558655225 is about 80985.5247868408. The cubic root of 6558655225 is about 1871.8523996090.

The spelling of 6558655225 in words is "six billion, five hundred fifty-eight million, six hundred fifty-five thousand, two hundred twenty-five".