25242225 has 12 divisors (see below), whose sum is σ = 41733936. Its totient is φ = 13462480.

The previous prime is 25242199. The next prime is 25242281. The reversal of 25242225 is 52224252.

It is a happy number.

It is not a de Polignac number, because 25242225 - 2⁵ = 25242193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25242195 and 25242204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168207 + ... + 168356.

It is an arithmetic number, because the mean of its divisors is an integer number (3477828).

Almost surely, 2^25242225 is an apocalyptic number.

25242225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25242225 is a deficient number, since it is larger than the sum of its proper divisors (16491711).

25242225 is a wasteful number, since it uses less digits than its factorization.

25242225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336576 (or 336571 counting only the distinct ones).

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

The square root of 25242225 is about 5024.1641095808. The cubic root of 25242225 is about 293.3431004266.

Adding to 25242225 its reverse (52224252), we get a palindrome (77466477).

The spelling of 25242225 in words is "twenty-five million, two hundred forty-two thousand, two hundred twenty-five".