25407225 has 18 divisors (see below), whose sum is σ = 45507566. Its totient is φ = 13550400.

The previous prime is 25407223. The next prime is 25407241. The reversal of 25407225 is 52270452.

It can be written as a sum of positive squares in 3 ways, for example, as 8785296 + 16621929 = 2964^2 + 4077^2 .

It is not a de Polignac number, because 25407225 - 2¹ = 25407223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25407223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56236 + ... + 56685.

Almost surely, 2^25407225 is an apocalyptic number.

25407225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25407225 is a deficient number, since it is larger than the sum of its proper divisors (20100341).

25407225 is a wasteful number, since it uses less digits than its factorization.

25407225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112937 (or 112929 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 25407225 is about 5040.5580048245. The cubic root of 25407225 is about 293.9808747798.

Adding to 25407225 its reverse (52270452), we get a palindrome (77677677).

The spelling of 25407225 in words is "twenty-five million, four hundred seven thousand, two hundred twenty-five".