25280890 has 16 divisors (see below), whose sum is σ = 45932832. Its totient is φ = 10017424.

The previous prime is 25280881. The next prime is 25280891. The reversal of 25280890 is 9808252.

It is not an unprimeable number, because it can be changed into a prime (25280891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10744 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (2870802).

Almost surely, 2^25280890 is an apocalyptic number.

25280890 is a deficient number, since it is larger than the sum of its proper divisors (20651942).

25280890 is a wasteful number, since it uses less digits than its factorization.

25280890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23741.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 25280890 is about 5028.0105409595. The cubic root of 25280890 is about 293.4928009750.

The spelling of 25280890 in words is "twenty-five million, two hundred eighty thousand, eight hundred ninety".