2425404521 has 4 divisors (see below), whose sum is σ = 2434160772. Its totient is φ = 2416648272.

The previous prime is 2425404493. The next prime is 2425404529. The reversal of 2425404521 is 1254045242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1254045242 = 2 ⋅627022621.

It can be written as a sum of positive squares in 2 ways, for example, as 240870400 + 2184534121 = 15520^2 + 46739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425404521 - 2²⁶ = 2358295657 is a prime.

It is a super-3 number, since 3×2425404521³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2425404529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4377710 + ... + 4378263.

It is an arithmetic number, because the mean of its divisors is an integer number (608540193).

Almost surely, 2^2425404521 is an apocalyptic number.

It is an amenable number.

2425404521 is a deficient number, since it is larger than the sum of its proper divisors (8756251).

2425404521 is an equidigital number, since it uses as much as digits as its factorization.

2425404521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756250.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 2425404521 is about 49248.3961261684. The cubic root of 2425404521 is about 1343.5733911582.

Adding to 2425404521 its reverse (1254045242), we get a palindrome (3679449763).

The spelling of 2425404521 in words is "two billion, four hundred twenty-five million, four hundred four thousand, five hundred twenty-one".