25939853 has 4 divisors (see below), whose sum is σ = 25951260. Its totient is φ = 25928448.

The previous prime is 25939847. The next prime is 25939873. The reversal of 25939853 is 35893952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25270729 + 669124 = 5027^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 25939853 - 2⁶ = 25939789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25939813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998 + ... + 7271.

It is an arithmetic number, because the mean of its divisors is an integer number (6487815).

Almost surely, 2^25939853 is an apocalyptic number.

It is an amenable number.

25939853 is a deficient number, since it is larger than the sum of its proper divisors (11407).

25939853 is an equidigital number, since it uses as much as digits as its factorization.

25939853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11406.

The product of its digits is 291600, while the sum is 44.

The square root of 25939853 is about 5093.1182000814. The cubic root of 25939853 is about 296.0209878288.

The spelling of 25939853 in words is "twenty-five million, nine hundred thirty-nine thousand, eight hundred fifty-three".