25782890 has 16 divisors (see below), whose sum is σ = 53039232. Its totient is φ = 8839824.

The previous prime is 25782877. The next prime is 25782893. The reversal of 25782890 is 9828752.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25782893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184094 + ... + 184233.

It is an arithmetic number, because the mean of its divisors is an integer number (3314952).

Almost surely, 2^25782890 is an apocalyptic number.

25782890 is an abundant number, since it is smaller than the sum of its proper divisors (27256342).

25782890 is a wasteful number, since it uses less digits than its factorization.

25782890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368341.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 25782890 is about 5077.6854963654. The cubic root of 25782890 is about 295.4227015061.

The spelling of 25782890 in words is "twenty-five million, seven hundred eighty-two thousand, eight hundred ninety".