25112225 has 12 divisors (see below), whose sum is σ = 31234236. Its totient is φ = 20028480.

The previous prime is 25112221. The next prime is 25112249. The reversal of 25112225 is 52221152.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 678976 + 24433249 = 824^2 + 4943^2 .

It is not a de Polignac number, because 25112225 - 2² = 25112221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25112197 and 25112206.

It is not an unprimeable number, because it can be changed into a prime (25112221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7979 + ... + 10671.

It is an arithmetic number, because the mean of its divisors is an integer number (2602853).

Almost surely, 2^25112225 is an apocalyptic number.

25112225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25112225 is a deficient number, since it is larger than the sum of its proper divisors (6122011).

25112225 is a wasteful number, since it uses less digits than its factorization.

25112225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076 (or 3071 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 25112225 is about 5011.2099337386. The cubic root of 25112225 is about 292.8386512785.

Adding to 25112225 its reverse (52221152), we get a palindrome (77333377).

It can be divided in two parts, 25 and 112225, that multiplied together give a square (2805625 = 1675²).

The spelling of 25112225 in words is "twenty-five million, one hundred twelve thousand, two hundred twenty-five".