25321318 has 16 divisors (see below), whose sum is σ = 41680656. Its totient is φ = 11441440.

The previous prime is 25321277. The next prime is 25321337. The reversal of 25321318 is 81312352.

It is a junction number, because it is equal to n+sod(n) for n = 25321292 and 25321301.

It is a congruent number.

It is an unprimeable number.

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, 480 + ... + 7132.

It is an arithmetic number, because the mean of its divisors is an integer number (2605041).

Almost surely, 2^25321318 is an apocalyptic number.

25321318 is a deficient number, since it is larger than the sum of its proper divisors (16359338).

25321318 is a wasteful number, since it uses less digits than its factorization.

25321318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839.

The product of its digits is 1440, while the sum is 25.

The square root of 25321318 is about 5032.0292129518. The cubic root of 25321318 is about 293.6491642432.

The spelling of 25321318 in words is "twenty-five million, three hundred twenty-one thousand, three hundred eighteen".