25166425 has 12 divisors (see below), whose sum is σ = 31343356. Its totient is φ = 20044800.

The previous prime is 25166423. The next prime is 25166459. The reversal of 25166425 is 52466152.

It can be written as a sum of positive squares in 6 ways, for example, as 1459264 + 23707161 = 1208^2 + 4869^2 .

It is not a de Polignac number, because 25166425 - 2¹ = 25166423 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25166423) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3937 + ... + 8113.

Almost surely, 2^25166425 is an apocalyptic number.

25166425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25166425 is a deficient number, since it is larger than the sum of its proper divisors (6176931).

25166425 is a wasteful number, since it uses less digits than its factorization.

25166425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4423 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 25166425 is about 5016.6148945280. The cubic root of 25166425 is about 293.0491788837.

The spelling of 25166425 in words is "twenty-five million, one hundred sixty-six thousand, four hundred twenty-five".