25042425 has 24 divisors (see below), whose sum is σ = 41559840. Its totient is φ = 13305600.

The previous prime is 25042421. The next prime is 25042429. The reversal of 25042425 is 52424052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25042421) and next prime (25042429).

It is not a de Polignac number, because 25042425 - 2² = 25042421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25042395 and 25042404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27985 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (1731660).

Almost surely, 2^25042425 is an apocalyptic number.

25042425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25042425 is a deficient number, since it is larger than the sum of its proper divisors (16517415).

25042425 is a wasteful number, since it uses less digits than its factorization.

25042425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 25042425 is about 5004.2407016450. The cubic root of 25042425 is about 292.5670822838.

Adding to 25042425 its reverse (52424052), we get a palindrome (77466477).

The spelling of 25042425 in words is "twenty-five million, forty-two thousand, four hundred twenty-five".