4255025235521 has 4 divisors (see below), whose sum is σ = 4263192271044. Its totient is φ = 4246858200000.

The previous prime is 4255025235511. The next prime is 4255025235523. The reversal of 4255025235521 is 1255325205524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3208537155121 + 1046488080400 = 1791239^2 + 1022980^2 .

It is a cyclic number.

It is not a de Polignac number, because 4255025235521 - 2¹⁰ = 4255025234497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4255025235523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4083516980 + ... + 4083518021.

It is an arithmetic number, because the mean of its divisors is an integer number (1065798067761).

Almost surely, 2^{4255025235521} is an apocalyptic number.

It is an amenable number.

4255025235521 is a deficient number, since it is larger than the sum of its proper divisors (8167035523).

4255025235521 is an equidigital number, since it uses as much as digits as its factorization.

4255025235521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8167035522.

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 4255025235521 in words is "four trillion, two hundred fifty-five billion, twenty-five million, two hundred thirty-five thousand, five hundred twenty-one".