25905983 has 4 divisors (see below), whose sum is σ = 26270928. Its totient is φ = 25541040.

The previous prime is 25905941. The next prime is 25905991. The reversal of 25905983 is 38950952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25905983 - 2¹⁰ = 25904959 is a prime.

It is a super-2 number, since 2×25905983² = 1342239910392578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25905983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25905083) 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, 182366 + ... + 182507.

It is an arithmetic number, because the mean of its divisors is an integer number (6567732).

Almost surely, 2^25905983 is an apocalyptic number.

25905983 is a deficient number, since it is larger than the sum of its proper divisors (364945).

25905983 is an equidigital number, since it uses as much as digits as its factorization.

25905983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364944.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 25905983 is about 5089.7920389737. The cubic root of 25905983 is about 295.8920922408.

The spelling of 25905983 in words is "twenty-five million, nine hundred five thousand, nine hundred eighty-three".