6392440225 has 12 divisors (see below), whose sum is σ = 7989044224. Its totient is φ = 5073682320.

The previous prime is 6392440213. The next prime is 6392440231. The reversal of 6392440225 is 5220442936.

It is not a de Polignac number, because 6392440225 - 2⁵ = 6392440193 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1003509 + ... + 1009858.

Almost surely, 2^6392440225 is an apocalyptic number.

It is an amenable number.

6392440225 is a deficient number, since it is larger than the sum of its proper divisors (1596603999).

6392440225 is a wasteful number, since it uses less digits than its factorization.

6392440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013504 (or 2013499 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 6392440225 is about 79952.7374453183. The cubic root of 6392440225 is about 1855.9042169383.

The spelling of 6392440225 in words is "six billion, three hundred ninety-two million, four hundred forty thousand, two hundred twenty-five".