6504255223553 has 8 divisors (see below), whose sum is σ = 6527855486568. Its totient is φ = 6480655818624.

The previous prime is 6504255223489. The next prime is 6504255223573. The reversal of 6504255223553 is 3553225524056.

It can be written as a sum of positive squares in 4 ways, for example, as 268332288064 + 6235922935489 = 518008^2 + 2497183^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6504255223553 - 2⁶ = 6504255223489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6504255223498 and 6504255223507.

It is not an unprimeable number, because it can be changed into a prime (6504255223573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17671325 + ... + 18035637.

It is an arithmetic number, because the mean of its divisors is an integer number (815981935821).

Almost surely, 2^{6504255223553} is an apocalyptic number.

It is an amenable number.

6504255223553 is a deficient number, since it is larger than the sum of its proper divisors (23600263015).

6504255223553 is a wasteful number, since it uses less digits than its factorization.

6504255223553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429043.

The product of its (nonzero) digits is 5400000, while the sum is 47.

The spelling of 6504255223553 in words is "six trillion, five hundred four billion, two hundred fifty-five million, two hundred twenty-three thousand, five hundred fifty-three".