25242425 has 24 divisors (see below), whose sum is σ = 34086360. Its totient is φ = 18432000.

The previous prime is 25242389. The next prime is 25242439. The reversal of 25242425 is 52424252.

It can be written as a sum of positive squares in 12 ways, for example, as 5626384 + 19616041 = 2372^2 + 4429^2 .

It is not a de Polignac number, because 25242425 - 2⁶ = 25242361 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25242394 and 25242403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32441 + ... + 33209.

It is an arithmetic number, because the mean of its divisors is an integer number (1420265).

Almost surely, 2^25242425 is an apocalyptic number.

25242425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25242425 is a deficient number, since it is larger than the sum of its proper divisors (8843935).

25242425 is a wasteful number, since it uses less digits than its factorization.

25242425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 888 counting only the distinct ones).

The product of its digits is 6400, while the sum is 26.

The square root of 25242425 is about 5024.1840133498. The cubic root of 25242425 is about 293.3438751664.

Adding to 25242425 its reverse (52424252), we get a palindrome (77666677).

The spelling of 25242425 in words is "twenty-five million, two hundred forty-two thousand, four hundred twenty-five".