25166725 has 12 divisors (see below), whose sum is σ = 31336164. Its totient is φ = 20049920.

The previous prime is 25166719. The next prime is 25166753. The reversal of 25166725 is 52766152.

It can be written as a sum of positive squares in 6 ways, for example, as 3048516 + 22118209 = 1746^2 + 4703^2 .

It is not a de Polignac number, because 25166725 - 2⁷ = 25166597 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 4467 + ... + 8383.

It is an arithmetic number, because the mean of its divisors is an integer number (2611347).

Almost surely, 2^25166725 is an apocalyptic number.

25166725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25166725 is a deficient number, since it is larger than the sum of its proper divisors (6169439).

25166725 is a wasteful number, since it uses less digits than its factorization.

25166725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184 (or 4179 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 25166725 is about 5016.6447950797. The cubic root of 25166725 is about 293.0503433241.

The spelling of 25166725 in words is "twenty-five million, one hundred sixty-six thousand, seven hundred twenty-five".