25949783 has 4 divisors (see below), whose sum is σ = 26154240. Its totient is φ = 25745328.

The previous prime is 25949779. The next prime is 25949797. The reversal of 25949783 is 38794952.

It is a happy number.

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 25949783 - 2² = 25949779 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 (25949713) 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, 102038 + ... + 102291.

It is an arithmetic number, because the mean of its divisors is an integer number (6538560).

Almost surely, 2^25949783 is an apocalyptic number.

25949783 is a deficient number, since it is larger than the sum of its proper divisors (204457).

25949783 is a wasteful number, since it uses less digits than its factorization.

25949783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204456.

The product of its digits is 544320, while the sum is 47.

The square root of 25949783 is about 5094.0929516451. The cubic root of 25949783 is about 296.0587561411.

The spelling of 25949783 in words is "twenty-five million, nine hundred forty-nine thousand, seven hundred eighty-three".