25206025 has 12 divisors (see below), whose sum is σ = 33660172. Its totient is φ = 18613440.

The previous prime is 25206023. The next prime is 25206029. The reversal of 25206025 is 52060252.

It can be written as a sum of positive squares in 6 ways, for example, as 6170256 + 19035769 = 2484^2 + 4363^2 .

It is not a de Polignac number, because 25206025 - 2¹ = 25206023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25205987 and 25206005.

It is not an unprimeable number, because it can be changed into a prime (25206023) 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, 38454 + ... + 39103.

Almost surely, 2^25206025 is an apocalyptic number.

25206025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25206025 is a deficient number, since it is larger than the sum of its proper divisors (8454147).

25206025 is a wasteful number, since it uses less digits than its factorization.

25206025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580 (or 77575 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25206025 is about 5020.5602277037. The cubic root of 25206025 is about 293.2028050743.

Adding to 25206025 its reverse (52060252), we get a palindrome (77266277).

The spelling of 25206025 in words is "twenty-five million, two hundred six thousand, twenty-five".