25245760 has 28 divisors (see below), whose sum is σ = 60117228. Its totient is φ = 10098176.

The previous prime is 25245739. The next prime is 25245761. The reversal of 25245760 is 6754252.

25245760 = T₄₁₀₁ + T₄₁₀₂ + T₄₁₀₃.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 15808576 = 3072^2 + 3976^2 .

It is not an unprimeable number, because it can be changed into a prime (25245761) 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 3 ways as a sum of consecutive naturals, for example, 39127 + ... + 39766.

Almost surely, 2^25245760 is an apocalyptic number.

25245760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

25245760 is the 4103-rd centered triangular number.

It is an amenable number.

25245760 is an abundant number, since it is smaller than the sum of its proper divisors (34871468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25245760 is an equidigital number, since it uses as much as digits as its factorization.

25245760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78910 (or 78900 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 25245760 is about 5024.5158970790. The cubic root of 25245760 is about 293.3567933487.

The spelling of 25245760 in words is "twenty-five million, two hundred forty-five thousand, seven hundred sixty".