5421256521245 has 16 divisors (see below), whose sum is σ = 6522521179392. Its totient is φ = 4325668908480.

The previous prime is 5421256521199. The next prime is 5421256521283.

5421256521245 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5421256521245 - 2¹⁸ = 5421256259101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5421256521196 and 5421256521205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6986474 + ... + 7723556.

It is an arithmetic number, because the mean of its divisors is an integer number (407657573712).

Almost surely, 2^{5421256521245} is an apocalyptic number.

It is an amenable number.

5421256521245 is a deficient number, since it is larger than the sum of its proper divisors (1101264658147).

5421256521245 is a wasteful number, since it uses less digits than its factorization.

5421256521245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740932.

The product of its digits is 960000, while the sum is 44.

The spelling of 5421256521245 in words is "five trillion, four hundred twenty-one billion, two hundred fifty-six million, five hundred twenty-one thousand, two hundred forty-five".