225404037646 has 8 divisors (see below), whose sum is σ = 357994648080. Its totient is φ = 106072488288.

The previous prime is 225404037643. The next prime is 225404037671. The reversal of 225404037646 is 646730404522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225404037641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3314765226 + ... + 3314765293.

It is an arithmetic number, because the mean of its divisors is an integer number (44749331010).

Almost surely, 2^225404037646 is an apocalyptic number.

225404037646 is a deficient number, since it is larger than the sum of its proper divisors (132590610434).

225404037646 is a wasteful number, since it uses less digits than its factorization.

225404037646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629530538.

The product of its (nonzero) digits is 967680, while the sum is 43.

The spelling of 225404037646 in words is "two hundred twenty-five billion, four hundred four million, thirty-seven thousand, six hundred forty-six".