5425184521 has 4 divisors (see below), whose sum is σ = 5425489044. Its totient is φ = 5424880000.

The previous prime is 5425184503. The next prime is 5425184549. The reversal of 5425184521 is 1254815245.

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 1103568400 + 4321616121 = 33220^2 + 65739^2 .

It is a cyclic number.

It is not a de Polignac number, because 5425184521 - 2⁷ = 5425184393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5425184561) 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, 123760 + ... + 161761.

It is an arithmetic number, because the mean of its divisors is an integer number (1356372261).

Almost surely, 2^5425184521 is an apocalyptic number.

It is an amenable number.

5425184521 is a deficient number, since it is larger than the sum of its proper divisors (304523).

5425184521 is a wasteful number, since it uses less digits than its factorization.

5425184521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304522.

The product of its digits is 64000, while the sum is 37.

The square root of 5425184521 is about 73655.8519127978. The cubic root of 5425184521 is about 1757.1338207465.

Adding to 5425184521 its reverse (1254815245), we get a palindrome (6679999766).

The spelling of 5425184521 in words is "five billion, four hundred twenty-five million, one hundred eighty-four thousand, five hundred twenty-one".