25407425 has 12 divisors (see below), whose sum is σ = 31643436. Its totient is φ = 20236800.

The previous prime is 25407409. The next prime is 25407449. The reversal of 25407425 is 52470452.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1132096 + 24275329 = 1064^2 + 4927^2 .

It is not a de Polignac number, because 25407425 - 2⁴ = 25407409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3917 + ... + 8133.

It is an arithmetic number, because the mean of its divisors is an integer number (2636953).

Almost surely, 2^25407425 is an apocalyptic number.

25407425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25407425 is a deficient number, since it is larger than the sum of its proper divisors (6236011).

25407425 is a wasteful number, since it uses less digits than its factorization.

25407425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468 (or 4463 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 25407425 is about 5040.5778438588. The cubic root of 25407425 is about 293.9816461617.

Adding to 25407425 its reverse (52470452), we get a palindrome (77877877).

The spelling of 25407425 in words is "twenty-five million, four hundred seven thousand, four hundred twenty-five".