6438285225 has 18 divisors (see below), whose sum is σ = 11531684606. Its totient is φ = 3433752000.

The previous prime is 6438285181. The next prime is 6438285229. The reversal of 6438285225 is 5225828346.

6438285225 is a `hidden beast` number, since 6 + 43 + 82 + 8 + 522 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 18429849 + 6419855376 = 4293^2 + 80124^2 .

It is not a de Polignac number, because 6438285225 - 2⁸ = 6438284969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438285229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14307076 + ... + 14307525.

Almost surely, 2^6438285225 is an apocalyptic number.

It is an amenable number.

6438285225 is a deficient number, since it is larger than the sum of its proper divisors (5093399381).

6438285225 is a wasteful number, since it uses less digits than its factorization.

6438285225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28614617 (or 28614609 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 6438285225 is about 80238.9258714248. The cubic root of 6438285225 is about 1860.3303480190.

The spelling of 6438285225 in words is "six billion, four hundred thirty-eight million, two hundred eighty-five thousand, two hundred twenty-five".