2521442423425 has 12 divisors (see below), whose sum is σ = 3211091000956. Its totient is φ = 1962636264000.

The previous prime is 2521442423417. The next prime is 2521442423453. The reversal of 2521442423425 is 5243242441252.

It can be written as a sum of positive squares in 6 ways, for example, as 126107373456 + 2395335049969 = 355116^2 + 1547687^2 .

It is not a de Polignac number, because 2521442423425 - 2³ = 2521442423417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1362940926 + ... + 1362942775.

Almost surely, 2^{2521442423425} is an apocalyptic number.

2521442423425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521442423425 is a deficient number, since it is larger than the sum of its proper divisors (689648577531).

2521442423425 is a wasteful number, since it uses less digits than its factorization.

2521442423425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725883748 (or 2725883743 counting only the distinct ones).

The product of its digits is 614400, while the sum is 40.

Adding to 2521442423425 its reverse (5243242441252), we get a palindrome (7764684864677).

The spelling of 2521442423425 in words is "two trillion, five hundred twenty-one billion, four hundred forty-two million, four hundred twenty-three thousand, four hundred twenty-five".