25681090 has 16 divisors (see below), whose sum is σ = 46293120. Its totient is φ = 10257520.

The previous prime is 25681081. The next prime is 25681091. The reversal of 25681090 is 9018652.

It is not an unprimeable number, because it can be changed into a prime (25681091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7701 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (2893320).

Almost surely, 2^25681090 is an apocalyptic number.

25681090 is a deficient number, since it is larger than the sum of its proper divisors (20612030).

25681090 is a wasteful number, since it uses less digits than its factorization.

25681090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 25681090 is about 5067.6513297582. The cubic root of 25681090 is about 295.0333774357.

The spelling of 25681090 in words is "twenty-five million, six hundred eighty-one thousand, ninety".