25432225 has 36 divisors (see below), whose sum is σ = 39531324. Its totient is φ = 16087680.

The previous prime is 25432219. The next prime is 25432237. The reversal of 25432225 is 52223452.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5798464 + 19633761 = 2408^2 + 4431^2 .

It is not a de Polignac number, because 25432225 - 2⁷ = 25432097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 25432225.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15127 + ... + 16723.

Almost surely, 2^25432225 is an apocalyptic number.

25432225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25432225 is a deficient number, since it is larger than the sum of its proper divisors (14099099).

25432225 is a wasteful number, since it uses less digits than its factorization.

25432225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1622 counting only the distinct ones).

The product of its digits is 4800, while the sum is 25.

The square root of 25432225 is about 5043.0372792594. The cubic root of 25432225 is about 294.0772661620.

Adding to 25432225 its reverse (52223452), we get a palindrome (77655677).

The spelling of 25432225 in words is "twenty-five million, four hundred thirty-two thousand, two hundred twenty-five".