25996018 has 8 divisors (see below), whose sum is σ = 39219948. Its totient is φ = 12922704.

The previous prime is 25996013. The next prime is 25996027. The reversal of 25996018 is 81069952.

It can be written as a sum of positive squares in 2 ways, for example, as 21967969 + 4028049 = 4687^2 + 2007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25996013) 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 3 ways as a sum of consecutive naturals, for example, 37221 + ... + 37912.

Almost surely, 2^25996018 is an apocalyptic number.

25996018 is a deficient number, since it is larger than the sum of its proper divisors (13223930).

25996018 is a wasteful number, since it uses less digits than its factorization.

25996018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75308.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 25996018 is about 5098.6290314162. The cubic root of 25996018 is about 296.2344821463.

The spelling of 25996018 in words is "twenty-five million, nine hundred ninety-six thousand, eighteen".