25372225 has 6 divisors (see below), whose sum is σ = 31461590. Its totient is φ = 20297760.

The previous prime is 25372223. The next prime is 25372231. The reversal of 25372225 is 52227352.

It can be written as a sum of positive squares in 3 ways, for example, as 1635841 + 23736384 = 1279^2 + 4872^2 .

It is not a de Polignac number, because 25372225 - 2¹ = 25372223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25372193 and 25372202.

It is not an unprimeable number, because it can be changed into a prime (25372223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507420 + ... + 507469.

Almost surely, 2^25372225 is an apocalyptic number.

25372225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25372225 is a deficient number, since it is larger than the sum of its proper divisors (6089365).

25372225 is a wasteful number, since it uses less digits than its factorization.

25372225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014899 (or 1014894 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 25372225 is about 5037.0849704963. The cubic root of 25372225 is about 293.8458205585.

Adding to 25372225 its reverse (52227352), we get a palindrome (77599577).

The spelling of 25372225 in words is "twenty-five million, three hundred seventy-two thousand, two hundred twenty-five".