25223424425 has 6 divisors (see below), whose sum is σ = 31277046318. Its totient is φ = 20178739520.

The previous prime is 25223424383. The next prime is 25223424439. The reversal of 25223424425 is 52442432252.

It can be written as a sum of positive squares in 3 ways, for example, as 268271641 + 24955152784 = 16379^2 + 157972^2 .

It is not a de Polignac number, because 25223424425 - 2¹⁸ = 25223162281 is a prime.

It is a super-2 number, since 2×25223424425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504468464 + ... + 504468513.

It is an arithmetic number, because the mean of its divisors is an integer number (5212841053).

Almost surely, 2^25223424425 is an apocalyptic number.

25223424425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25223424425 is a deficient number, since it is larger than the sum of its proper divisors (6053621893).

25223424425 is a wasteful number, since it uses less digits than its factorization.

25223424425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008936987 (or 1008936982 counting only the distinct ones).

The product of its digits is 153600, while the sum is 35.

Adding to 25223424425 its reverse (52442432252), we get a palindrome (77665856677).

The spelling of 25223424425 in words is "twenty-five billion, two hundred twenty-three million, four hundred twenty-four thousand, four hundred twenty-five".