25853813 has 8 divisors (see below), whose sum is σ = 27661920. Its totient is φ = 24090480.

The previous prime is 25853809. The next prime is 25853837. The reversal of 25853813 is 31835852.

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

It is not a de Polignac number, because 25853813 - 2² = 25853809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853843) 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, 9995 + ... + 12312.

It is an arithmetic number, because the mean of its divisors is an integer number (3457740).

Almost surely, 2^25853813 is an apocalyptic number.

It is an amenable number.

25853813 is a deficient number, since it is larger than the sum of its proper divisors (1808107).

25853813 is a wasteful number, since it uses less digits than its factorization.

25853813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22387.

The product of its digits is 28800, while the sum is 35.

The square root of 25853813 is about 5084.6644923731. The cubic root of 25853813 is about 295.6933342383.

The spelling of 25853813 in words is "twenty-five million, eight hundred fifty-three thousand, eight hundred thirteen".